Question

which statement best describes the density of the outer planets? all the outer planets have low density. the outer planets are denser than the inner planets. saturn is dense, but the other outer planets are not. uranus and neptune are dense, but jupiter and saturn are not.

Explanation:

Outer planets (Jupiter, Saturn, Uranus, Neptune) are gas/ice giants, composed mainly of light elements (hydrogen, helium, ices) rather than the rocky, metal-rich composition of inner planets. All have much lower overall density than inner rocky planets; even Uranus and Neptune, with more icy components, still have lower density compared to inner planets, and all outer planets qualify as low-density relative to the inner ones. The other options are incorrect: outer planets are less dense than inner ones, Saturn is the least dense of all planets, and Uranus/Neptune are not dense compared to inner planets.

Answer:

All the outer planets have low density.