The correct answer is B.
From the context, one can infer in this poem the world "cull" means "to pluck".
The speaker tells that, during spring, she cannot pluck the herbs. However, when autumn comes, she can rip the red leaves from the trees and give way for green new ones to blossom.
Sustainable is the answer I'm pretty sure
Answer: the only true point of view,
is full of the hope that he,
the hub of the cosmos
with his hair blown sideways,
