Which of the following statements about using supporting materials in your speeches is not true?

a.

each piece of support should be clearly relevant to the point it is used to support.

b.

each piece of support needs to be developed to the point that audience members can both understand the item of support and see how the item backs up the point it is used to support.

c.

each piece of supporting material should meet the demands that the audience and the occasion place on the kind of material that is likely to be received favorably.

d.

the presentation should rely excessively on one type of support (such as examples).