lunarpower wrote:

[email protected] wrote:Hello Ron, I solved this cr and eliminated all the options and was left with B and C. I chose B as B has the wording as 'can' and C option says that disinfectant will weaken the immune system which is not at all given in the stimulus. So my answer is B. Please reply is it right??

that's also a factor -- it's much easier to justify statements with "can" than to justify statements with "will".

again, i refer you to OG12 #70, as i pointed out earlier in the thread -- in all important respects, it's exactly the same problem as this one.

have you already seen OG12 #70?

-- if you *have* already seen that problem but you're still having trouble with the same concepts in this problem, then that indicates that you aren't learning enough from the practice problems that you're already doing.
in this case, go back to the OG and make sure that you are doing all of the following:
https://www.beatthegmat.com/550-to-720-i ... tml#330724

-- if you have *not*, then why are you using third-party sources when you still have fresh OG questions?

Although spraying disinfectant on toys in preschools generally kills most germs that cause illnesses, such as the common cold, many pediatricians no longer recommend this practice. Exposure to germs that cause the common cold and other non-dangerous illnesses helps young children to develop a degree of immunity to fight other, more serious pathogens.

If the statements above are true, which of the following conclusions is most strongly supported by them?

(A)

Disinfecting toys for germs can reduce the spread of a variety of communicable diseases among children who attend preschools.
(B)Disinfectant can reduce children's immunity to serious illnesses by reducing the chance that children are exposed to germs that cause common illnesses.

(C)

Disinfecting toys for the germs that cause the common cold weakens young children's immune systems.
(D)

The more common cold-causing germs a small child is exposed to, the less severe the common cold will be if the child does contract it.
(E)

The field of pediatrics is currently focused on limiting young children's exposure to germs, especially germs spread in public places like schools and playgrounds.

karthikpandian19 wrote:Ron,

I have a 2 different doubt about the general concept. It may be simple for you to clarify.

1. This sentence is with reasoning as: (let me know if i am wrong)

No Disinfectant causes germs (X causes Y), Germs causes Illness (Y causes Z), Illness helps gain immunity (Z causes A)

So can we infer X causes A (No disinfectant gains immunity)

2. What is CONTRAPOSITIVE? I read thru some article, but sure on its concept?

Although spraying disinfectant on toys in preschools generally kills most germs that cause illnesses, such as the common cold, many pediatricians no longer recommend this practice. Exposure to germs that cause the common cold and other non-dangerous illnesses helps young children to develop a degree of immunity to fight other, more serious pathogens.

If the statements above are true, which of the following conclusions is most strongly supported by them?

(A)

Disinfecting toys for germs can reduce the spread of a variety of communicable diseases among children who attend preschools.
(B)Disinfectant can reduce children's immunity to serious illnesses by reducing the chance that children are exposed to germs that cause common illnesses.

(C)

Disinfecting toys for the germs that cause the common cold weakens young children's immune systems.
(D)

The more common cold-causing germs a small child is exposed to, the less severe the common cold will be if the child does contract it.
(E)

The field of pediatrics is currently focused on limiting young children's exposure to germs, especially germs spread in public places like schools and playgrounds.

lunarpower wrote:

karthikpandian19 wrote:Ron,

I have a 2 different doubt about the general concept. It may be simple for you to clarify.

1. This sentence is with reasoning as: (let me know if i am wrong)

No Disinfectant causes germs (X causes Y), Germs causes Illness (Y causes Z), Illness helps gain immunity (Z causes A)

So can we infer X causes A (No disinfectant gains immunity)

i don't see a question here, and it's not clear what you are actually asking me. what are you actually trying to ask?

2. What is CONTRAPOSITIVE? I read thru some article, but sure on its concept?

you don't need the terminology or concepts of formal logic on this exam. in fact, having your mind cluttered by such things will make it much harder to solve the problems.