2016 OG CR 30

Crystal W wrote:People who do regular volunteer work tend to live longer, on average, than people who do not. It has been found that "doing good," a category that certainly includes volunteer work, releases endorphins, the brain's natural opiates, which induce in people a feeling of well-being. Clearly, there is a connection: Regular releases of endorphins must in some way help to extend people's lives.Which of the following, if true, most seriously undermines the force of the evidence given as support for the hypothesis that endorphins promote longevity?
A People who do regular volunteer work are only somewhat more likely than others to characterize the work they do for a living as "doing good."
B Although extremely high levels of endorphins could be harmful to health, such levels are never reached as a result of the natural release of endorphins.
C There are many people who have done some volunteer work but who do not do such work regularly.
D People tend not to become involved in regular volunteer work unless they are healthy and energetic to begin with.
E Releases of endorphins are responsible for the sense of well-being experienced by many long-distance runners while running.

The OA is D. Can someone explain it?

OptimusPrep wrote:

Crystal W wrote:People who do regular volunteer work tend to live longer, on average, than people who do not. It has been found that "doing good," a category that certainly includes volunteer work, releases endorphins, the brain's natural opiates, which induce in people a feeling of well-being. Clearly, there is a connection: Regular releases of endorphins must in some way help to extend people's lives.Which of the following, if true, most seriously undermines the force of the evidence given as support for the hypothesis that endorphins promote longevity?
A People who do regular volunteer work are only somewhat more likely than others to characterize the work they do for a living as "doing good."
B Although extremely high levels of endorphins could be harmful to health, such levels are never reached as a result of the natural release of endorphins.
C There are many people who have done some volunteer work but who do not do such work regularly.
D People tend not to become involved in regular volunteer work unless they are healthy and energetic to begin with.
E Releases of endorphins are responsible for the sense of well-being experienced by many long-distance runners while running.

The OA is D. Can someone explain it?

People who do volunteering tend to live longer because they feel happy because of the endorphin release.
Conclusion:Volunteering work extend's people's lives.

We need to weaken this conclusion.

1. What if something else increases the lives?
2. What if the persons are already healthy?
In these cases, we cannot conclude that endorphins released as a result of volunteering increase lives

Of the given option, option D resonates with point 2

Correct Option: D

Crystal W wrote:

OptimusPrep wrote:

Crystal W wrote:People who do regular volunteer work tend to live longer, on average, than people who do not. It has been found that "doing good," a category that certainly includes volunteer work, releases endorphins, the brain's natural opiates, which induce in people a feeling of well-being. Clearly, there is a connection: Regular releases of endorphins must in some way help to extend people's lives.Which of the following, if true, most seriously undermines the force of the evidence given as support for the hypothesis that endorphins promote longevity?
A People who do regular volunteer work are only somewhat more likely than others to characterize the work they do for a living as "doing good."
B Although extremely high levels of endorphins could be harmful to health, such levels are never reached as a result of the natural release of endorphins.
C There are many people who have done some volunteer work but who do not do such work regularly.
D People tend not to become involved in regular volunteer work unless they are healthy and energetic to begin with.
E Releases of endorphins are responsible for the sense of well-being experienced by many long-distance runners while running.

The OA is D. Can someone explain it?

People who do volunteering tend to live longer because they feel happy because of the endorphin release.
Conclusion:Volunteering work extend's people's lives.

We need to weaken this conclusion.

1. What if something else increases the lives?
2. What if the persons are already healthy?
In these cases, we cannot conclude that endorphins released as a result of volunteering increase lives

Of the given option, option D resonates with point 2

Correct Option: D

Thank you, but I am a little confused because the question is "undermines the force of the evidence", not the "conclusion". Can you explain more?

Poisson wrote:

Crystal W wrote:

OptimusPrep wrote:

Crystal W wrote:People who do regular volunteer work tend to live longer, on average, than people who do not. It has been found that "doing good," a category that certainly includes volunteer work, releases endorphins, the brain's natural opiates, which induce in people a feeling of well-being. Clearly, there is a connection: Regular releases of endorphins must in some way help to extend people's lives.Which of the following, if true, most seriously undermines the force of the evidence given as support for the hypothesis that endorphins promote longevity?
A People who do regular volunteer work are only somewhat more likely than others to characterize the work they do for a living as "doing good."
B Although extremely high levels of endorphins could be harmful to health, such levels are never reached as a result of the natural release of endorphins.
C There are many people who have done some volunteer work but who do not do such work regularly.
D People tend not to become involved in regular volunteer work unless they are healthy and energetic to begin with.
E Releases of endorphins are responsible for the sense of well-being experienced by many long-distance runners while running.

The OA is D. Can someone explain it?

People who do volunteering tend to live longer because they feel happy because of the endorphin release.
Conclusion:Volunteering work extend's people's lives.

We need to weaken this conclusion.

1. What if something else increases the lives?
2. What if the persons are already healthy?
In these cases, we cannot conclude that endorphins released as a result of volunteering increase lives

Of the given option, option D resonates with point 2

Correct Option: D

Thank you, but I am a little confused because the question is "undermines the force of the evidence", not the "conclusion". Can you explain more?

Hello,

I also thought this. Because of the wording of the question, it seemed to be asking to undermine the force of the evidence and not the conclusion. I though this was odd. I interpreted this to mean undermine sentence 2. Between D and E, I picked E. Could someone please help explain the logic in this question? Thanks

Crystal W wrote:People who do regular volunteer work tend to live longer, on average, than people who do not. It has been found that "doing good," a category that certainly includes volunteer work, releases endorphins, the brain's natural opiates, which induce in people a feeling of well-being. Clearly, there is a connection: Regular releases of endorphins must in some way help to extend people's lives.Which of the following, if true, most seriously undermines the force of the evidence given as support for the hypothesis that endorphins promote longevity?
A People who do regular volunteer work are only somewhat more likely than others to characterize the work they do for a living as "doing good."
B Although extremely high levels of endorphins could be harmful to health, such levels are never reached as a result of the natural release of endorphins.
C There are many people who have done some volunteer work but who do not do such work regularly.
D People tend not to become involved in regular volunteer work unless they are healthy and energetic to begin with.
E Releases of endorphins are responsible for the sense of well-being experienced by many long-distance runners while running.

The OA is D. Can someone explain it?