Which of the following is a professional way to establish credibility?

A) Maintain a safe and respectful distance from the audience
B) Avoid mentioning your key credentials so as not to sound boastful
C) Mention your relationship with someone your audiences knows and respects
D) Present a biased point of view that favors your requirements
E) Do not mention your educational qualifications and expertise

Answer: C
Explanation: C) Introducing yourself effectively by citing key credentials like your education, experience, and expertise is actually a way to build your credibility. You can also mention your relationship with someone the audience knows, respects, and believes to be credible. This affinity, or connection with a credible source, will help convince the audience that you are trustworthy.