Commercials about protecting your family from harm, donating to worthy causes, and demonstrating your love for someone succeed because they understand the power of

This media mogul who invented mass broadcasting in the United States was a technologically driven visionary:

a) Guglielmo Marconi; b) Lee DeForest; c) Edwin Armstrong; d) David Sarnoff; e) William Paley

Studies show that listeners ________ after a speech with presentation aids.

A. care more B. are more surprised C. remember more D. are more confused