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 are gas - giants mainly composed of hydrogen and helium, resulting in low density.

Answer:

All the outer planets have low density.