I think it is C, because if I'm right present principal is something that is happening presently? If so, C would be the answer because they "are doing" the exercises right now in context.
By quoting your evidence and looking back at your notes or text also by using your supporting details... <span />
What is the passage?
lol, Parentheses are generally used as an explanation or afterthought into a passage that is grammatically already complete without the stuff in the parentheses. In writing it is u usually marked with curved brackets.
Example: He finally answered (after taking five minutes to think) that he did not understand the question.
I hope that this helps....
"definition" is the one term among the choices given in the question that distinguishes <span>a term from all other terms. The correct option among all the options that are given in the question is the first option or option "A". I hope that this is the answer that has actually come to your desired help.</span>
