This is a Simile.
There is no hidden meaning for it to be a metaphor, and it uses the form as something or like something, which makes it a simile.
Answer: D
Reasoning: If you think about it you cannot use it's in any other tense. Past tense, it's wouldn't work. Future tense, it's may not work.
Tactic: Process of Elimination
The picture might be changed to convey the tone of the revised passage as D. The sharks might be hiding behind a large rock sticking out of the ocean to convey the suspenseful tone of the revised passage.
<h3>What is a tone?</h3>
A tone simply means the feeling that's created based on the choice of words on a literary work.
In this case, the picture might be changed to convey the tone of the revised passage as the sharks might be hiding behind a large rock sticking out of the ocean to convey the suspenseful tone of the revised passage.
Learn more about tones on:
brainly.com/question/15447799
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What specific book are you talking about?