Final answer:
When writing for a formal audience, use mature sentence structures and academic diction to maintain a composed, professional tone.
Explanation:
Mature sentence structures and academic diction are appropriate when writing for a formal audience. Formal writing should avoid a conversational tone, casual language, slang, contractions, and abbreviations.
Formal writing maintains a composed, professional tone by using proper grammar, avoiding slang, and refraining from using exclamation marks. This style is necessary to convey complex information objectively and professionally.
Learn more about formal writing for a professional audience here:
https://brainly.com/question/49311371
