The given picture shows a top-down
view of the Milky Way. Which of the following best
describes the shape of the Milky Way? Is it (A) a circle, (B) a spiral,
or (C) a sphere?
The question gives us an image of
the Milky Way, so we must find the best shape that describes the Galaxy. We know that the Milky Way is flat,
so we cannot describe the shape as a sphere. That leaves a circle and a spiral
as the best choices.
We can see that a circle
approximately fits the outer shape of the Milky Way, but a spiral perfectly matches
the swirling pattern in the Galaxy.
And so, we can say that the most
correct answer is option (B). The shape of the Milky Way is a