The answer is c. the fleeting nature of existence.
The narrator mentions that the lovers will never kiss, but they will also never age, and the trees will never lose their leaves. Therefore, mortality will never reach them--which is what all humans want, so he is happy that they get to exist forever young.
I've always been told check for <em>spelling errors </em>first, which technically you are beginning the process of proofreading.
Next, I've been told to look for usage errors, which means, did you use the word in the correct context.
Then I believe you look for grammar mistakes, which includes subject verb agreements, fragments, punctuation, and can include style of the paper, which I believe looks at the sentence variety.
Hopefully this helped and good luck.
The answer should be B:insincere
Hope this helps you have a great day!
A - consideration
mark brainliest please?? :)