It would be helpful if you would add the statements
, as well as what is learned. :)
The statement that best exemplifies a strong persuasive claim is the last one - School communications should be sent electronically to conserve paper.
In this sentence, you have your claim that you want to prove, as well as the reason why your claim is correct. The other options are just facts, they are not sentences you would use in order to persuade someone to believe or do something.
C. The subject is human vanity and the theme is that human vanity is destroyed by
time.
I'm guessing b. because then those senses help us visualize in our head. I don't know really could be wrong but, hope it helped.