Answer:
Implied metaphor
Explanation:
If it isn't that one, then the first one.
The answer would be A, because the subject has to be what the sentence is talking about which is the drivers.
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The phrase that indicated a lost in thought feel is the "Midnight shakes the memory". It means that his train of thought is going double time in the dark or at night.
C. It is the only opinionated answer that needs to be cited.