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 (Mercury, Venus, Earth, Mars) are defined by their solid, rocky compositions. Gaseous planets are the outer gas giants; small ice/dust objects are comets/asteroids; and terrestrial planets are smaller than gas giants.

Answer:

A. They are made of mostly rock.