The correct answer to this problem would be the word theirs, the first one.
The usage of their/s is kind of a tricky one since it depends on what it usually is pertaining to in the previous lines. In this problem, it would refer to our presentation. If another word, let's say presentation, is added after the blank, then the answer would be their. In this case, there isn't anything after it so the answer would be theirs.
Those that have apostrophes on them aren't an option since it isn't applicable in this situation.
<span>An essay that has a thesis supported with examples is called and illustrative essay.
They are the most simple and straightforward form of essays.</span>
Answer:
A. After sentence 5
Explanation:
This is the answer as the sentence should be placed along with another about wealth, or else it would not make sense :)