Option A, geographic poles are defined by Earth's rotation, is the correct answer.
The rotation of the earth is its revolution around its own shaft. The direction of Earth's rotation is eastward. The North Pole of the Earth is the spot in the Northern Hemisphere where Earth's axle of revolution joins its surface. The South Pole is another location; where the axis of Earth's circumrotation intersects its facade, in Antarctica. The geographical poles of the North and South Poles of the Earth move a few meters over a period of few years.
