Answer:
Persuade
Explanation:
when the authors purpose is to persuade, the author tries to change the readers mind
That there pretty awful by his words in the first couple of lines
D) Subject is the element necessary to complete the sentence above.
You already have a predicate (drives), so you don't need that, or a subordinate/independent clause. What you do need is a subject. For example:
<em>Mercedes </em>drives like no other car.
I believe The answer is A.