I would say multimedia aids is the correct answer.
Answer:
The piece, The last Supper was painted by Leonardo da Vinci
Answer:
All of the above logically could be applied in this context; however, if you are to choose one, I would think your best bet is "Vary Tone and Emphasis."
Explanation:
There's a lot that goes into making a speech more enthralling for the audience, especially depending on what kind of presentation you're giving. Generally speaking, I believe the tone and emphasis are most important for all speeches, so that probably sounds like your best bet.
(NOT MY WORDS TAKEN FROM A SOURCE)
The correct answer for the question that is being presented above is this one:
Discovering the intent involves the evaluation of the audience and purpose associated with the evidence. If you really want to know the purpose of the reason of a person in doing a thing, then you need to evaluate him or her.
Hope this helped!
:)