Answer
(B) What action should the receiver take?
(C) What does the receiver need to know about this topic?
Step-by-step explanation:
In order to create the appropriate business message you need to know several things about the market that you are trying to persuade, first you need to know who your market is, and whatñs the kind of audience that is going ot hear your message, then you have to think like that audience and try to figure out what would the audience needs to know and wants to know about your product, and then what is the action that you want them to take, buy something, be informed?, like your product? what is the final goal that your message has.