You cannot put any sort of endmark (period, question mark, or exclamation point) here because it is not a complete sentence. Complete sentences must have a subject and a predicate. You can tell there's not even a verb here, so this is just a fragment, and we would have to use a comma.
a. Very truly yours,
Answer:
I don't like to draw picture.
it is true i hope it helps
Brainstorming is where you brain storm all your ideas before anything else.
D, "their." Since you're talking about two of them, it's plural. The sentence:
Neither Carol nor Ellen would hesitate to share their supplies with you.
