What three rules are offered for using visual aids in business?

Still photographs projected at the same speed are mixed instantly by the human eye to create the illusion of movement. This phenomenon is called

a. animation. b. mimesis. c. virtual reality. d. persistence of vision.

Each radio station must successfully log and receive ____ EAS alerts per month and transmit alerts ______ times per month:

a. one b. two c. three d. varies depending on how many days in a given month e. none of these answers