If the public library shared by the adjacent towns of Redville and Gle

(A) Many more people who currently walk to the library live in central Redville than in central Glenwood.
This may seem like the correct answer, but let's dissect it a bit. If more people who currently walk to the library live in Redville than in Glenwood, this would leave room for change if the library were to move to Glenwood. Remember, the argument here is that the moving the library to Glenwood will give access to more people who will be walking distance.

(B) The number of people living in central Glenwood who would use the library if it were located there is smaller than the number of people living in central Redville who currently use the library.
Bingo! This one clearly undermines the argument. If the number of people in Glenwood who would use the library is less than the number of people in Redville who currently use the library, then moving the library to Glenwood will not increase the number of people who use it. This is our answer!

(C) The number of people using the public library would continue to increase steadily if the library were moved to Glenwood.
This strengthens the argument.

(D) Most of the people who currently either drive to the library or take public transportation to reach it would continue to do so if the library were moved to central Glenwood.
This strengthens the argument.

(E) Most of the people who currently walk to the library would remain library users if the library were relocated to central Glenwood.
This strengthens the argument.


Please send kudos if this was helpful in any way!

The question stem basically argues that the location of the library should be shifted as it would be much easier for the majority crowd to access the newly located library (Glenwood).
Hence,we need to find an option that suggest that even it would be at walking distance still many people won't come.

With just a glance,B does the same.

A is not given and we cannot assume so

B is correct
C is strengthening
D is absolutely irrelevant
E is strengthening.

I hope you understood.

If the public library shared by the adjacent towns of Redville and Glenwood were relocated from the library’s current, overcrowded building in central Redville to a larger, available building in central Glenwood, the library would then be within walking distance of a larger number of library users. That is because there are many more people living in central Glenwood than in central Redville, and people generally will walk to the library only if it is located close to their homes.

Which one of the following, if true, most seriously weakens the argument?

(A) Many more people who currently walk to the library live in central Redville than in central Glenwood. - WRONG. Present situation is of least importance. What may result upon shifting the library is more important.

(B) The number of people living in central Glenwood who would use the library if it were located there is smaller than the number of people living in central Redville who currently use the library. - CORRECT. If the pool of people is small then conclusion is likely to falter.

(C) The number of people using the public library would continue to increase steadily if the library were moved to Glenwood. - WRONG. It sort of strengthens the conclusion but not the reasoning offered. Who these people are that would join the library? We are not sure about this.

(D) Most of the people who currently either drive to the library or take public transportation to reach it would continue to do so if the library were moved to central Glenwood. - WRONG. Irrelevant as scope shifts.

(E) Most of the people who currently walk to the library would remain library users if the library were relocated to central Glenwood. - WRONG. Remains neutral as large or small it can't established.

Answer B.