I don’t know what I am supposed to help you with. But if you ask me in the comment section below I’m sure I can help.
Idk, We all dont know, so maybe the world will never know
If you look at a dictionary to substantiate is to support an opinion or claim with proof or evidence. So a Substantiated opinion is an opinion that is backed up with proof.
Hope this helps :)
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<span>C. With my one engine heart and part of my skateboard moving fast as a car
I think it is this one because it is the only one that addresses "the sidewalk racer" which I would interpret as a skateboard.
Hope that helps.</span>