Some, and perhaps all, spiral galaxies have at their centers
A) quasars.
B) pulsars.
C) black holes.
D) globular star clusters.

Question

Quizplus · Accepted Answer

It is widely believed that most spiral galaxies, including our own Milky Way, have supermassive black holes at their centers. This is based on observations of the motion of stars and gas near the galactic center, which suggest the presence of a very massive object that cannot be explained by the visible matter alone.

Some, and Perhaps All, Spiral Galaxies Have at Their Centers