Deimos remains over almost the same spot on Mars' surface. To remain over the same spot it must:
A)always have the same side facing Mars.
B)be in an orbit that is above the Martian equator.
C)be in an orbit that passes over the poles.
D)be at a distance over the Martian surface that is equal to the distance from the center of Mars to the surface.

Question

Quizplus · Accepted Answer

To remain over the same spot on Mars' surface, Deimos would need to be in a geostationary (or areostationary for Mars) orbit, which requires it to be above the Martian equator. This allows it to match the rotation period of Mars, staying over the same geographic location.

Deimos Remains Over Almost the Same Spot on Mars' Surface