Explanation:
COMMA RULE #3 – THE COMMA IN A COMPOUND SENTENCE: Use a comma before and, but, or, nor, for, so, or yet to join two independent clauses that form a compound sentence.
The answer it's variant A.themselves because it's an indirect object in dative case
I think it's C but I'm not to sure because I didn't read the whole thing :/
Answer: Dynamic connects to the second one, Static connects to the first one, Indirect goes to the 3rd one, and Direct goes to thee fourth. I think that's the answer..if i'm wrong i'm really really sorry!!