If a microphone has a bass roll off switch, what phenomenon is the switch meant to correct?

Describe the three ways a speaker can establish a motive for the audience to listen to them

What will be an ideal response

Advertising copywriter ________ recognized in 1841 that there were merchants who needed to reach consumers other than their local newspaper readership. He contacted several Philadelphia newspapers and agreed to broker the sale of space between them and interested advertisers, thus inventing the advertising agency.

A. J. Walter Thompson B. Volney B. Palmer C. Cyrus Curtis D. F. Wayland Ayer