Archit143
Because city council members in small towns are intimately acquainted with the public they serve, they clearly have a more difficult job than city council members in larger cities.
The conclusion above rests on which of the following assumptions?
Working directly with members of the public is the one of the most challenging aspects of serving on a city council.
Managing the affairs of a large city requires a more significant time commitment than working directly with the public.
City council members in small towns are often related to a certain percentage of the population, making them intimately acquainted with the people they serve.
Residents of small towns often attend city council meetings to present their concerns.
City council members in large cities rarely engage the public directly.
I don't really care for the question, because the conclusion does not require us to specifically assume any of the five answer choices. We learn that small town council members work with the public. The conclusion is that they have a more difficult job than big city council members. There's a huge gap in that argument. The conclusion only follows if we know that it is difficult to work with the public. So A is the only answer which bridges that gap.
But we do not need to assume specifically that working with the public is "one of the
most challenging" parts of a council member's job, which is why I don't care much for answer A. If small-town and big-city council members had exactly the same jobs with the one exception that small-town council members had an additional challenge - they need to work with the public - then small-town council members would have more difficult jobs than big-city members, even if working with the public was not one of the
most challenging parts of their jobs. So as A is worded, it's not an assumption required for the argument.
edit - rereading the question, we also need to assume something like what E says. The question never mentions what interaction big-city council members have with the public. The argument only makes any sense if we assume they have less interaction than do small-town council members. The wording is so imprecise though that it's hard to tell what any of it means; being " intimately acquainted" with the public does not mean the same thing as "engage the public directly".
So the argument requires two assumptions, and there are two answers which are imperfect but are reasonably close to what we need. I don't think the language of the question is precise enough to let us distinguish between those two choices.