Answer:
B) ad hominem
Step-by-step explanation:
Ad Hominen is latin for "attack the man" this means that it´s a direct attack to the man that holds the argument, but in this case can also be attributable the qualities of the man as the quality or reason of the whole argument, this means that basically it has nothing to do that the staff is friendly with the fact that the public library is one of the best libraries in town.