Anna plans to use a powerpoint presentation in her speech. what advice should she follow? a. avoid discussing and interpreting each visual aid for her audience; instead, she should let her audience members draw their own conclusions about what the visual is conveying. b. use a laser pointer to draw her audience's attention to important points on her powerpoint slides. c. leave each powerpoint slide on the screen after she is done talking about it to ensure that her audience understands the slide. d. anna should practice all these tips as she uses powerpoint in her presentation.