Answer: B) While it is true that the city has to cut the budget, the city does not have to take the funds from the library.
Step-by-step explanation: When giving or explaining an argument in a controversial topic, we can defend our point the view, but also give some reason to the opposite side, to demonstrate a sense of logic and empathy that sometimes can help to win the argument, or to reach an agreement, this is called conceding a point. In the given phrases from "Say No to Budget Cuts", the one where the author concedes a point, is the option B, because he accepts that the city needs to cut budget.