The four giant gas planets that are made primarily of lightweight elements are

AVenus, Saturn, Uranus, and Neptune.
BMercury, Venus, Earth, and Neptune.
CJupiter, Saturn, Uranus, and Neptune.
DEarth, Saturn, Neptune, and Venus.

Verified Answer :

CJupiter, Saturn, Uranus, and Neptune are the giant gas planets. the four planets that are rocky are Mars, Venus,Earth, and Mercury

The four giant gas planets that are made primarily of lightweight elements are Jupiter, Saturn, Uranus and Neptune (C).