There is no such thing as a key to decoding or interpreting every nonverbal _____ in every context

Kurt wanted to provide his listeners with new information about changes in student loan eligibility, so

he prepared a speech for which the general purpose was to ________ his audience. Fill in the blanks with correct word

If your speech is well planned and rehearsed, ________

A) you shouldn?t use presentation aids B) you must use presentation aids C) presentation aids can enhance your speech D) both B and C