The difference in composition between the giant planets and the terrestrial planets is most likely caused by the fact that
A) the giant planets are much larger.
B) only the terrestrial planets have iron cores.
C) the terrestrial planets are closer to the Sun.
D) the giant planets are made mostly of carbon.

Question

Quizplus · Accepted Answer

The terrestrial planets are closer to the Sun, which means they formed in a warmer region of the solar system where lighter gases like hydrogen and helium were less likely to condense, leading to a composition more dominated by heavier elements and compounds.

The Difference in Composition Between the Giant Planets and the Terrestrial