How Can a Person Establish Credibility with His or Her

Multiple Choice

How can a person establish credibility with his or her audience if the person is unknown to that audience?

A) Being modest and not mentioning her education or expertise
B) Maintaining a respectful distance from her audience before the presentation,so as not to violate the professional relationship with attempts at building rapport
C) Mentioning her professional relationship with a renowned expert in the field
D) Avoiding the discussion of work done by other experts in the field
E) Presenting a highly subjective idea that favors her own view point