There are several things that you should ask yourself when analyzing word choice, but the most important is to choose the shortest and simplest word that conveys the meaning you want.
The basic unit of meter in poetry is a foot.
Syllable would be the correct answer if the option said 'stressed or unstressed syllable,' because there are two types of syllables, not only the unstressed one. An iamb and a trochee are types of feet in poetry, so they are incorrect as well. A foot is a unit of meter which consists of a number of syllables.
The indirect object would be Stan
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.