Answer:
A) Without support from the city, the library would not be able to sustain itself for long.
Step-by-step explanation:
Option A is direct plea to the city council and also warns the city council of potential effects of cutting off the financial support to library. Also, as mentioned in the text library is important part of the community, it is city council’s responsibility to be concerned about the library.
Option B does not have any direct request for financial help and it is not city council’s responsibility to persuade politicians to appreciate the library.
Option C and D should never be added - they will only go in favor of city council’s decision of cutting off financial aid.