3). Because the other three are facts and because it states an opinion
A metaphor is a piece of figurative language that compares two unlike things without using the terms "like" or "as". Off the bat, you can eliminate B and C, because they include these words. Option A is a piece of prose, it makes no comparisons.
The answer is D, because it compares the subject, "I" (most likely a person), to a rock (which is not a person).
The author includes logical evidence that Indian workers and formerly enslaved people didn't get along because wages went down.
In the passage, it states:
"The Indian coolies and the ex-slaves, who resented the newcomers flooding the colonies and driving down wages, were instant rivals."
In this case, the Indian coolies are the newcomers and the ex-slaves are the ones resenting them. Therefore, the ex-slaves resent the Indian coolies because they were driving down wages.
I would say C because you would need to be able to decipher what the work was trying telling you.
A dependent Clause is a group of words, that have a subject and a verb, but cannot stand alone in a sentence. So, "<span>who had seen the tornado himself" seems most logical to me because they state subject and verb, and cannot stand alone.</span>
