Which portion of the earth is believed to generate its magnetic field?
a. the mantle
b. the crust
c. the inner core
d. the inner and outer cores

I would C the inner core. The Earth's magnetic field is believed to be generated by electric currents in the conductive material of its core, created by convection currents due to heat escaping from the core.

answer; i believe the correct answer is (clockwise and outward) about the center;