Simpler wording/defining,
Answer:
It is an indefinite pronoun
Answer:
C. Helping to improve someone else's writing making you a better writer too.
Explanation:
It isn't A. because that supports an opinion, not a fact.
It isn't B. because it does not elaborate on how the classes are helpful and educational.
It isn't D. because, like above, it is not specific enough.
Hope this helps! <3
Answer: C doesn't refer to any word in the sentence.
Explanation: is a phrase or clause that is not clearly and logically related to the word or words it modifies
