Which interior layer is mostlikely to be the source of Earth’s magnetic field A-The crust
B-The mantle
C-The core
D-None of the layers could be the source
Plse helppp i will mark brainlest

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home. what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point