Question

imagine a planet with no magnetic field. such a planet probably does not have a

a. 24 - hour day
b. solid core
c. liquid core
d. crust

Explanation:

The magnetic field of a planet is mainly generated by the movement of the liquid core (dynamo effect). If a planet has no magnetic field, it probably does not have a liquid core. A 24 - hour day is related to the planet's rotation period, a solid core cannot generate a magnetic field through the dynamo effect in the same way as a liquid core, and the crust has little to do with the generation of the magnetic field.

Answer:

C. liquid core