Question

which statement correctly describes terrestrial planets?
they are made of mostly rock
they are made of gases
they are small objects of ice and dust
they are very large compared to other planets

Explanation:

Terrestrial planets, such as Mercury, Venus, Earth, and Mars, are characterized by having a solid, rocky surface. Gas giants (like Jupiter and Saturn) are made of gases. Small objects of ice and dust are more like comets. And terrestrial planets are not very large compared to gas giants.

Answer:

They are made of mostly rock.