Solve pls brainliest

How can a speaker best appeal to an audience? a. by revealing just enough information to make the au us b. by allowing the audience to ask questions about the speech's subject matter c. by adapting the speech to the expectations and knowledge of the audience d. by encouraging listeners who disagree to voice their opinions

Which is not among the style choices a writer would use, if he or she is trying to establish a formal writing style/

Aclassmate is sending hurtful messages such as "you're stupid" and "you're ugly." this behavior can be described as denigration harassment cyberstalking exclusion