Hand Gestures are ESSENTIAL
visual aids are great if possible
short simple sentences so easier for the audience to understand
clear loud voice, make sure you are aware of the intent behind your voice - is it to persuade (loud projecting booming persuasive), create sympathy (quiet, urging) etc etc.
I think B. But instead of those dots, I prefer a comma instead
A leader so your answer would be c
I believe the answer to question two is true. Political writings were usually persuasive.
Hope I helped!