The source of earth's magnetic field is best explained by domains the dynamo theory coulomb's law electrostatics

electrostatics

Explanation:

The source of the earth's magnetic field is best explained by electrostatics, which is the area of physics that encompasses the study of electrical charges at rest. The electrostatic phenomena studied by this area of knowledge arise from the force of attraction and repulsion that electric charges exert on each other.

This knowledge allows the explanation of the earth's magnetic field, which is a gigantic magnetic distortion created by the earth's nucleus, which functions as a magnet, that is, it exerts forces of attraction and rupture. The core is divided into two parts, the inner part consisting of iron, nickel and other solid state metals, and the outer part, in which these elements are in liquid form.  The magnetic field protects the air layers by minimizing solar wind attacks. Without such a defense, the particles released by the sun would rip the atmosphere off the planet.

the answer would be c