Correct option is D
The true statement among the given options is: Inner planet are made up of rocks.
Inner planets, also known as terrestrial planets, are composed mainly of rocks and metals.
• These planets are located closer to the Sun compared to the outer planets.
• The inner planets in our solar system are Mercury, Venus, Earth, and Mars. They have solid surfaces and are primarily composed of materials such as silicates, iron, and other rocky substances.
On the other hand, the outer planets, also known as gas giants or giant planets, are primarily composed of gases like hydrogen and helium.
• They are much larger in size compared to the inner planets. The outer planets in our solar system are Jupiter, Saturn, Uranus, and Neptune.