Valles Marineris on Mars may be a rift valley,a feature that is created when
A) a planet cools and produces scarps.
B) a planet is cracked after a large impact.
C) tectonic plates collide.
D) a planet's crust breaks apart along a fault line.

Question

Quizplus · Accepted Answer

Valles Marineris on Mars is thought to be a rift valley, which is a large elongated depression formed when a planet's crust breaks apart along a fault line.

Valles Marineris on Mars May Be a Rift Valley,a Feature