Question

1. landers and rovers are two types of unmanned space vehicles used to study mars. how do they differ in their functions on mars?

rovers are mobile and landers are not.
rovers are responsible for taking scientific instruments into space and landers act as rockets to propel the rover into space.
landers can orbit mars and rovers cannot.
landers are mobile and rovers are not.

Explanation:

Landers are designed to land and remain stationary on Mars' surface to conduct in-situ studies at a single location, while rovers are equipped with mobility systems to travel across the Martian terrain, allowing them to sample and study multiple sites. The other options are incorrect: launch vehicles carry instruments to space, not rovers/landers; neither landers nor rovers orbit Mars (orbiters do); and landers are not mobile.

Answer:

A. Rovers are mobile and landers are not.