The answer is A. Conflict
First, you find the simple subject and simple predicate.
If the '-ing' form of the verb is not part of the simple predicate, then determine how it is used in the sentence. If it's in a noun position, then it's a gerund. If it is used as an adjective, then it will be a participle.
I believe your answer should be Weak: Not a claim.
C or D. C because varying delivery isn't something that alot of people worry about, or D, because some times you don't need to use key words. I wouldn't trust myself with this answer, so be careful.