Answer:
to state the reason you believe your thesis is true.
Explanation:
in your claim you are not allowed to use evidence or reasoning. just saying what you believe.
The answer to this is your hair. I just looked it up and thats what most sites are saying
One of the richest men in the world is the appositive.
It has a comma that separates it from the rest of the sentence and the sentence makes sense without it as "Bill Gates started Microsoft."
If Bill Gates had a comma after it, it would be the apositive and the sentence would be "One of the richest men in the world started Microsoft," but since there is only one comma the appositve is "One of the richest men in the world."