No choice on the list is reasonably close to the correct answer.
The question is the same as asking "How much of the whole circle has
black polka-dots in it ?"
The sections of the circle aren't labeled, but we can see that the polka-dot
section is a little more than 1/4 of the circle ... maybe 30% of it ... so the
probability is a little more than 1/4 and close to 30%.
The choices are: A). 50%. ... B). 20%. ... C). 5%. ... D). 56.7%.
Choice B). is the closest, but that's only because the others are even
more absurd. It's not saying much for B).