Visual aids should be colorful because color is more vivid and attention-grabbing than black and white.
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Q28: Graphs are visual aids showing how variables
Q29: A line graph is most effective in
Q30: The most important principle to follow in
Q31: The room has to be completely dark
Q32: Several computer programs allow you to incorporate
Q34: Because it is easy to make computer-generated
Q35: Although there are many benefits to using
Q36: Effective visual aids make the speech more
Q37: The purpose of any chart is to
Q38: A _ graph illustrates how two variables
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