Question

which phrase best describes the outer planets?
rocky with few moons
gaseous with slow rotations
dense with few moons
gaseous with low density

Explanation:

The outer planets (Jupiter, Saturn, Uranus, Neptune) are gas giants. They have low density compared to the inner rocky planets. Their composition is mainly gases like hydrogen and helium. They also have many moons (not few). And their rotations are relatively fast (not slow).

Answer:

gaseous with low density