The Electrically Charged Particles That Produce Electric Currents and Therefore

Multiple Choice

The electrically charged particles that produce electric currents and therefore magnetic fields when they move inside Uranus and Neptune are:

A) electrons flowing through metallic iron in the planet's cores.
B) molecules such as ammonia (NH₃) , which become ionized when in solution in water.
C) liquid metallic hydrogen under immense pressure.
D) electrically conducting iron atoms in the molten cores.