I don't see the underline, but I'm pretty sure that the verb is "has known". That's the present perfect tense.
Answer:
The correct answers are:
- Don't let a computer virus put your business out of work. Buy our anti-virus software today.
-Won't you help our company join the green movement by separating the wet and dry waste in your recycling containers?
Explanation:
The Persuasive business message represents the attempt to convince the audience to take specific actions. It consists of four stages: gain attention, build interest, reduce resistance, and motivate action.
The first option invites the audience to buy anti-virus software, while the second one invites an audience to separate wet and dry waste in their recycling containers.
The other options do not contain any of the persuasive elements; those are the simple statements that contain information, without motivating action.
Ive never read about this, but looking at a summary I would say B.
