It should be A because I did it and I got it right so therefore I’m correct
A best supports the argument because it is the only answer that describes the pros of having mice as pets, while the others provide tips and facts upon adopting them.
It can affect your life in the business world in a lot of ways. If you have good rhetoric, you're more likely to be hired and you'll probably perform better since you'd be more persuasive and eloquent.
If you have poor rhetoric, you're probably less likely to be hired because you don't know the vocabulary or you're not very persuasive. You also might perform poorly (for instance if you had to sell something and you didn't have good speech)