I think the answer is C. I think so beacuse "vast meaning of usefullness" means that life is too short for all the useful things to get done.
I think it’s c I may be wrong tho. I wish you luck!!
Answer:
Standing on the smooth sandy beach at the east end of the pond, in a calm September afternoon, when a slight haze makes the opposite shore-line indistinct, I have seen whence came the expression, "the glassy surface of a lake."
Explanation: