Why do presenters use presentation aids?
a.
to make the presentation seem less credible
b.
to make the presentation more memorable
c.
to model the concepts of the presentation
d.
to ensure the presentation is entertaining

B. to make the presentation more memorable

Explanation:

Aids are important in a presentation so that listeners can better understand the message and save the information much longer through a memorable presentation.  When properly used, aids facilitate good message ordering and allow the speaker to present the information in a coherent sequence and highlight the most relevant topics of the exposition.

Some studies show that if we broadcast the message only verbally, after 3 days the listeners will remember only 10% of what we say. However, if this same message is supported by a aid, at the end of the same time listeners will remember 65% of what we communicate.

hello mate, can you add the lines 206-247?