Choose the one alternative that best completes the statement or answers the question. -A proton is to orbit Earth at the equator using Earth’s magnetic field to supply part of the

Choose the one alternative that best completes the statement or answers the question.
-A proton is to orbit Earth at the equator using Earth’s magnetic field to supply part of the necessary centripetal force. In what direction should the proton move?
A) southward
B) eastward
C) westward
D) upward
E) northward

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