The speaker uses a mic/microphone so that the audience can clearly hear him or her.
Answer:
Crowder breathes life into a world long past... Compelling, powerful and unforgettable. Audacity is an evocative reimagining of a fascinating historical figure who should be remembered for her determination in the face of great odds and powerful opposition - and for her role in changing America.
The correct answer is C, regionalism
Regionalism is writing in such a way as to convey the "local color" of a place. In this excerpt, the characteristics of the speaker's hometown are conveyed by the way he speaks, or his dialect.