In general, planets with interiors that are assumed to be molten are also expected to possess planet-wide magnetic fields. Which planet below is believed to have a molten interior and no planet-wide magnetic field?
A)Earth
B)Venus
C)Mercury
D)Mars

Question

Quizplus · Accepted Answer

Venus is believed to have a molten interior, but no planet-wide magnetic field has been detected. This is thought to be due to the slow rotation of Venus compared to Earth, which hinders the development of a dynamo in its core.

In General, Planets with Interiors That Are Assumed to Be