Which of the following is a question you should asked to evaluate the credibility of a source
A) does the source refer to other published works
B)where and when was the source published
C) does the author of the source share my views on the topic
D) does the author of the source use pathos to support his or her views
A and B could logically both work but I'd say the answer is A, because people generally consider a source more credible if it refers to other things and they collectively agree.