Which employee understands how to use slides effectively? Group of answer choices A. The employee who stands in front of the slide projection and talks about the content. B. The employee who uses animated effects every time he switches from one slide to another to jazz up the presentation. C. The employee who stares at her slides and reads them word for word to the audience. D. The employee who starts her presentation with a slide of a chart rather than with opening remarks. E. The employee who displays a blank screen whenever he speaks for lengthy periods without referencing his slides