Essay about what more to the question ?
Answer:
I think number 2 is right
Hyphens are used to link words that function as a single adjective before a noun. They are used with compound numbers, and to avoid confusion or awkward letter combinations. Hyphens are also used with certain prefixes and suffixes and/or in specific circumstances.
Answer : C) It summarizes the main topic of the essay
I would say C. Good luck!