Which of these is NOT a reason that planetary scientists suspect Ganymede has a subsurface ocean?
A) It has a variable magnetic field.
B) Ganymede's surface has evidence of past tectonic activity.
C) There is evidence of salts on the surface.
D) Ganymede is in synchronous rotation about Jupiter.

Question

Quizplus · Accepted Answer

Ganymede's synchronous rotation about Jupiter does not directly suggest the presence of a subsurface ocean. The other options (A, B, C) are related to evidence supporting the existence of a subsurface ocean, such as a variable magnetic field indicating a conductive liquid layer, surface features suggesting past geological activity, and the presence of salts that could have originated from an ocean beneath the surface.

Which of These Is NOT a Reason That Planetary Scientists