1) D.
2) A. (??)
3) B.
4) "Some of these nouns are pretty amusing."
A discussion moderator, or debate moderator, is a person whose role is to act as a neutral participant in a debate or discussion, holds participants to time limits and tries to keep them from straying off the topic of the questions being raised in the debate.
<em>An example of this is ^^^^^^^</em>
Chris Wallace, he played the moderator in the debates for Donald Trump and Joe Biden.
That would be a practical exercise. Practical means the actual doing or use of something rather than with theory and ideas. So it would apply to real life situations.
Hope this helps!
Either C or D I would say. Compared it to steel and plastic, but also related it to using slaves to get the sugar
