Bio diesel is a fuel that can be used in most road vehicles instead of gasoline. Its use produces significantly less air pollution, Market research predicts that as this fuel becomes more widely available over the next ten years or so , hundreds of thousands of drivers will use it . We can only conclude , then, that many people care about reducing pollution.

Which of the following , if true , most strengthens this argument?

A) Many individuals try to minimize their driving in order to reduce pollution.
Correct : This provides support to the conclusion that many ppl care about reducing pollution.

B) Bio diesel fuel costs 10% to 20% more than gasoline.
Incorrect : Cost is not the issue here. Pollution is the issue.

C) New environmental laws may require a reduction in amount of pollution new cars produce.
Incorrect : Amount of pollution that new cars emit is irrelevant to the scope of the argument.

D) A significant amount of air pollution comes from sources other than automobiles.
Incorrect : Issue is not about other sources of air pollution.

E) Increased use of bio diesel will reduce the need to import gasoline form other countries.
Incorrect : Import-Export is out of scope.

I Agree , but you'll be shocked now OA is : B funny yeah?

I will stick with B

A) Many individuals try to minimize their driving in order to reduce pollution.
Incorrect : This statement does not support the statement “Market research predicts that as this fuel becomes more widely available over the next ten years or so , hundreds of thousands of drivers will use it”.

B) Bio diesel fuel costs 10% to 20% more than gasoline.
Correct : Though the cost has increased, people are ready to use the bio diesel fuel

C) New environmental laws may require a reduction in amount of pollution new cars produce.
Incorrect : Out of scope.

D) A significant amount of air pollution comes from sources other than automobiles.
Incorrect : Out of scope.

E) Increased use of bio diesel will reduce the need to import gasoline form other countries.
Incorrect : Out of scope.

I will stick with B

A) Many individuals try to minimize their driving in order to reduce pollution.
Incorrect : This statement does not support the statement “Market research predicts that as this fuel becomes more widely available over the next ten years or so , hundreds of thousands of drivers will use it”.

B) Bio diesel fuel costs 10% to 20% more than gasoline.
Correct : Though the cost has increased, people are ready to use the bio diesel fuel

C) New environmental laws may require a reduction in amount of pollution new cars produce.
Incorrect : Out of scope.

D) A significant amount of air pollution comes from sources other than automobiles.
Incorrect : Out of scope.

E) Increased use of bio diesel will reduce the need to import gasoline form other countries.
Incorrect : Out of scope.

I too belong to A camp.

We are told to strengthen the conclusion - many people care about reducing pollution, only option A shows that people are conscious about pollution and so they prefer to reduce driving to cut pollution.

B, in fact, weakening the conclusion, in that its trying to focus the usage of Bio diesel by people mainly to save cost. People don't care about pollution but for cost and so they are using the Bio Diesel.

Q stem says - most strengthens this argument? Do u think something fishy here..argument or it should have been conclusion ?