Answer:
c.) pay is the right term for which I'd use it in a sentence.
We use deplore from following sentence :
1.Teachers deplore student behaviors that distract from lectures. ...
2. If you deplore the environmental practices of the company, you should not purchase their products. ...
3. I do not frequent luxury hotels because I deplore the snobbish attitudes of the haughty employees
My answer can be incorrect also so refer to Chrome too.
Sorry I'm not really not sure but I'll try and find out
D: It is used to emphasize their great knowledge <span />
