In Louise's speech about various golf grips and strokes, Louise used several golf clubs and demonstrated the moves herself. According to your textbook's guidelines on the use of presentation aids, was this a good technique?

a. Yes; a speaker can serve as a presentation aid to demonstrate how something works or is done.
b. Yes, but only if other objects or charts are used in conjunction with the speaker's movements.
c. No; Louise should have used someone else to demonstrate, so that she could keep speaking.
d. No; demonstrations like this are distracting and too informal for a public speech.

a