Answer: A) interviews with senior citizens describing their loneliness.
Step-by-step explanation: There are many different rhetorical devices that are used to persuade or inform an audience (readers, listeners, etc). Pathos is a common rhetorical device that consists in appealing to the audience's emotions. From the given options, the one that represents an example of using pathos as a part of an argument for building a new senior citizen's activity center, is the corresponding to option A: interviews with senior citizens describing their loneliness, because the description of their loneliness will cause sadness in the audience (emotion).