Answer:
D.) It is used as a verb to describe the main action of the sentence.
Explanation:
Shrieking is a verb because it is an action, it wouldn't be a verb if it was shrieked but in this case it is ending with <em>-ing</em>, therefore the action is taking place at the moment.
Hope this helps and if the explanation is unclear, I apologize.
Answer: an adverb .
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(Note: Adverbs can modify other adverbs.).
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I would believe that the answer would be I am ten million bricks of unshaken faith because it’s referring to something not human
