The answer is D and B, I am 100% sure they are correct
A speaker should list everything she knows about the topic and purpose of speech in the introduction.
This is not true, if you listed everything you knew what would make up the body of paper.
Should have something to grab audience’s attention, maybe a important highlights of history or background, and then a thesis (listing the items you plan to discuss and your stance on them or their importance.
Is the structure of the text which is the first factor.
Answer:
the answer is A to announce his resignation
A religious meal shared as a sign of love and fellowship