Answer:
The answer is C. sphere
Step-by-step explanation:
This is the only shape that is listed that can look like a revolving circle. The question doesn't ask which way the circle is being revolved so it can be a bit tricky.
A torus is what a circle looks like if you were to revolve it on it's Y axis. But this question doesn't specify that.
So only answer that can fit is a sphere.