Io has the most volcanic activity in the Solar System because
A) it is continually being bombarded with material in Saturn's E ring.
B) it is one of the largest moons and its interior is heated by radioactive decays.
C) of gravitational friction caused by the moon Enceladus.
D) its interior is tidally heated as it orbits around Jupiter.
E) the ice on the surface creates large pressure on the water below.

Question

Quizplus · Accepted Answer

Io's intense volcanic activity is primarily due to tidal heating caused by its elliptical orbit around Jupiter, which results in gravitational interactions that generate internal friction and heat.

Io Has the Most Volcanic Activity in the Solar System