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.

ahaha 8

my answer has to be at least 20 characters so here are the rest of the characters lol