Answer:
I think it's B
Explanation:
Well mite means a bug type thing but in this line it won't make sense. They are talking about payment so they must be talking about a coin. They also said simple mite so a coin with little value. So the answer would be b I think.
It is a noun, because you are talking about Mr. Mann.
Basically it is to organize your thoughts. You would usually make a Topic Web before you do a research paper, or essay.
Hope this is the answer you were looking for and that it helps!! :)