What is the question here?
Void means that something has no legal force. In other words is is not able to be used. For example, a void check. With a void check you cannot legal take money.
Answer:
Anything that you feel will capture an audience's interest and make them interested in the speech's topic.
Explanation:
Ex.
a quote
a story
a joke
an anecdote
Omg my class is on that book and movie
i dont get the begining wanna be friends
Answer:
Parallelism
its balancing his speech, making what he says feel impactful
