The answer is C. I got this right when I answered it, please correct me if I am wrong
Vanquished means to be conquered or defeated, so it is B. You could say the ememy has been vanquished or conquered.
It seems you are missing parts of the question. Could you try it again?
<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>