Answer: Option C.
The rocky planets, inside the asteroid belt
Step-by-step explanation:
The Earth is composed of Rocky planets inside asteriod. Asteroids are small planets that are found in the solar system. They are Rocky. Asteriod orbit around the sun. They are composed of minerals and rocks. They are formed closer to the sun. The Earth belong to the group of Rocky, inner astetriod. The Earth is rock and has solid surface like mountains, canyons, plains e.t.c.