The correct answer is A. from main pole to shaded pole.
A shaded pole motor is a single-phase induction motor that has two poles, one main pole and one shaded pole. The main pole is made of a solid piece of iron, while the shaded pole is made of a thin piece of iron that is surrounded by a copper ring. When current flows through the stator winding, it creates a magnetic field. The magnetic field is stronger at the main pole than at the shaded pole. This causes the rotor to turn in the direction from the main pole to the shaded pole.
Option B is incorrect because the current flows from the main pole to the shaded pole, not the other way around. Option C is incorrect because the direction of rotation is not dependent on voltage. Option D is incorrect because the direction of rotation is not dependent on power factor.