Audience-centeredness means that public speaker should
a. keep the audience foremost in mind throughout the speechmaking process.
b. use any means necessary to gain the assent of the audience.
c. avoid choosing topics that are controversial.
d. all of the above

A keep the audience foremost in mind throughout the speechmaking process

Abiography is a description of a real person's life, including factual details as well as stories from the person's life. biographies usually include information about the subject's personality and motivations, and other kinds of intimate details excluded in a general overview or profile of a person's life.