What is the best evidence for a supermassive black hole in the center of the Milky Way Galaxy?
A)amazing filaments of radio emission swirling around the center of the galaxy
B)the gigantic bursts of X- ray energy from a mysterious dark object
C)The existence of the Milky Way itself: The mass of the black hole is essential to gravitationally bind the galaxy together, so it doesn't fly apart.
D)the motions of stars around a mysterious dark object

Question

Quizplus · Accepted Answer

The motions of stars around a mysterious dark object provide the most direct and compelling evidence for the presence of a supermassive black hole in the center of the Milky Way. These stars orbit around a point that has no visible object to account for the immense gravitational pull, strongly suggesting that it is a black hole with a mass of around 4.3 million times that of the sun.

What Is the Best Evidence for a Supermassive Black Hole