What produces the force for the torque that turns an electric motor?

The electrical attraction of opposite charges.

The force on a current in a magnetic field.

An induced electromotive force acting on a loop of wire.

Electrical attraction to the North Pole of the magnet.

The appropriate response is the last one. The electrical fascination in the North Pole of the magnet. The essential standard for all electric engines is that when a current conveying conduit cuts an attractive field, a mechanical compel is created on the transmitter relative to the rate of progress in the attractive field which makes the conveyor move.