How does a writer establish credibility (ethos) in nonfiction?

How does a writer establish credibility (ethos) in nonfiction?

• A. By presenting accurate evidence, citing sources, and demonstrating ethics or authority.
• B. By using sensational language and exaggeration.
• C. By avoiding any sources and relying on personal opinion.
• D. By ignoring factual accuracy to persuade emotionally.

Answer: (A)