Which statement about the density of planets in the solar system is correct?

Question

[] Terrestrial planets are more dense, in part because they are so small.
[] Terrestrial planets are more dense, in part because they have so much more mass.
[] Gas giants are more dense, in part because they are so large.
[] Gas giants are more dense, in part because they have so much more mass.

Answer 1

[] Terrestrial planets are more dense, in part because they have so much more mass.