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.
Answer: A summary could be followed by a Conclusion, at least it seems reasonable if you get up and have something to say, something of enough importance to convey, you certainly can summarize what you tried to get across, and lastly provide a conclusion to make the Speech and your point of giving it, (at last complete), with a Conclusion.
This is simply my opinion, and I am not referencing any “rule book”, just what I find to be reasonable.
A final Conclusion would by this time,
allow the listener to evaluate all the speaker had said and why. It would have a greater purpose beyond a mere exercise.
This is, again, simply my view on the question and a proposed answer.
Explanation:
you make me a unicorn because when im around you my horn shows
