One Piece of Evidence That Can Help Astronomers Sort Out

Multiple Choice

One piece of evidence that can help astronomers sort out how the planets in our solar system formed is

A) discovering other galaxies of stars beyond the Milky Way
B) counting the number of moons around each planet in our own solar system
C) finding circumstellar disks of material around nearby stars
D) counting the craters on the surface of Jupiter, Saturn, Uranus, and Neptune
E) measuring variations in the amount of snowfall in northern Canada during this century