B. To convince the audience of a certain viewpoint.
Just look and think about persuasive cut it in half to it's original word. Think about the word “persuade,” which means “to convince somebody.” A persuasive essay is has all of the convincing techniques a writers can try to employ. It presents a situations, and can take a stands – either in its favor, or against it – to prove to readers whether it is beneficial or harmful for them.
I guess 1 st one is the answer
A reasonable inference that one can make out of this poem is that you should not be worried about your fate, because at the end people are part of a generation which has its own struggles and at the end, people have to face their own destiny,being courageous, as the previous generations were and have been.
This is the reason why is possible to conclude that the two lines best linked to the theme are:
"Be comforted; the world is very old,
And generations pass, as they have passed"
Anaphora i believe; i got help from my lit. teacher