A simile, because a simile is a phrase that includes the words like or as and your example says "-sounded like a freight train" so it's comparing the sound of the storm, to the sound of the freight train.
The sentence that refers to opinion is letter C: The
United States government is the best in the world.
A
fact is something – news, information, a talk, a seminar, etc., that is telling
the truth and objective. This could be referenced by the people listening to
it. An opinion is a declaration of the person’s thoughts and suggestions that
is possibly subjective in nature. This cannot be referenced since it is
declared by basing of emotions or one’s own perception on the information.
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Yes you are supposed to take a slight pause after saying the phrase "As Previously mentioned"
D is the correct option :)
Hope it helps :)
