The statement that is true for sentence that have more than one clause is that, there can be one negative word per clause. If a sentence has more than two clauses, then each clause can have one negative word. But double negatives in one clause is grammatically wrong.
I believe you chose the right one
Answer:
A: Understand that doing snow surveys is hard work
1. past
2. had, past perfect
3. has, have, present perfect
4. future
5. present
6. will have, future perfect
and #6 at the bottom is had cleared
It means that he didn't talk to him or contact him much and weren't in a good father-son relationship
