The main purpose of using multimedia in a presentation is to A) capture the attention of the audience.
B)make the presenter feel more relaxed.
C)help the audience organize the material.
D)communicate two or more objectives.

i believe it is the first option, having taken lessons

remember, the goal of an adjective clause is to add more information to a noun or a pronoun. as you can see from the examples above, you can add information by including a longer adjective clause or tighten up a sentence by turning the adjective clause into an adjective phrase.

i think it is b. hope this !