Answer:
The argument's central claim is that the library should continue to be open on Saturdays because, according to a poll from the previous year, that day sees the most visitors. The idea that the expense might be paid by a little tax increase supports the argument. A counterargument is offered along with a refutation, arguing that certain people would not be able to use the library on any other day and therefore closing on Saturdays would affect some members of the community more than others.