Question

Which should be included in a memo?

Answer 1

Memo's are serious business. They're no joke, many people have used them based on business, companies, and etc. Therefore, when finding a answer option above, let's consider an answer that would be a professional answer.

I would actually go with the answer as " a table of contents" which would then help the reader to understand where would everything be located.

Answer 2

A memo should include A Topic Line