Prewriting is the first stage of the writing process. It is followed by drafting, revision, editing, and publishing.
Prewriting strategies are brainstorming, clustering, free-writing, looping, and the journalist's questions (who, what, where, when, why, how)
Prewriting consists of outlining, diagramming, storyboarding, mindmapping or clustering.
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.