D. To see wether the knees show any where
Duplicity has largely negative connotations as the word is associated with being deceitful or "double-dealing" this could mean making a deal and then backing out at a later date or saying that you will do one thing and then later do something different.
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)
I’m pretty positive it’s b