Question

question 1 (20 points)
one purpose of the conclusion is to
explain the main points of your speech.
add new and compelling information.
encourage listeners to ask questions about your speech.
sum up the message you developed in your speech.

Explanation:

The conclusion of a speech is meant to wrap - up the overall message. It's not for introducing new information (to avoid confusion), not mainly for explaining main points (which is done in the body), and not primarily for encouraging questions. Its key role is to summarize the message developed throughout the speech.

Answer:

sum up the message you developed in your speech.