What tends to be the most difficult audience variable to analyze today?

Prejudicial publicity problems sometimes result from the reporting of:

a) involuntary confessions; b) a defendant’s prior criminal record; c) test results that may not be admitted into evidence at a trial; d) hearsay evidence; e) all of these.

Speakers use the __________ of a speech to provide proof to a claim.

A. conclusion B. body C. ethos D. introduction