in order to check your own understanding during a discussion, it is a good
idea to:
a. ask verifying questions.
b. repeat your main point regularly.
c. take a break to write notes.
d. refer to a reliable source, such as the internet.

Ask verifying questions.

A

Explanation

Asking a verifying question during a discussion a significant way to ensure you understand the concept of the discussion.

In this way, the point will stick in the mind when you regularly remember the end to raise or a question you asked regarding the subject.

Therefore for easy understanding, it is essential always to make reference or ask more question to enable you to  remember the points discussed quickly.

Nevertheless writing down short notes is always another way of referring and remembering the points during a discussion.

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but i think it is 2