1.) a. Noun
b. a feeling of uncertainty or lack of conviction.
2.) a. Verb
b. feel uncertain about.
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.
The verb specified from the sentence is a present participial.
Present participial is the form of a verb, ending in -ing in English, which is used in forming continuous tenses, e.g., in I'm thinking, alone in nonfinite clauses, e.g., in sitting here, I haven't a care in the world, as a noun, e.g., in good thinking, and as an adjective, e.g., in running water<span>.
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I hope my answer has come to your help. God bless and have a nice day ahead!
Pretty much just the main idea