The correct answer is A. 1°.
Polaris is the North Star, and it is the brightest star in the constellation Ursa Minor, the Little Bear. It is located very close to the north celestial pole, which is the point in the sky around which the stars appear to rotate. As a result, Polaris appears to remain in the same position in the sky, while the other stars appear to rotate around it.
However, Polaris does not actually remain in the same position. It is actually moving very slowly across the sky, completing a full circle in about 26,000 years. This movement is caused by the precession of the Earth’s axis. The Earth’s axis is not fixed in space, but instead wobbles like a top. This wobble causes the north celestial pole to move slowly across the sky.
The radius of the circle that Polaris describes around the north celestial pole is about 1°. This means that Polaris appears to move about 1° across the sky in the course of a year. This movement is very slow, and it is not noticeable to the naked eye.
The other options are incorrect because they are larger than the actual radius of the circle that Polaris describes around the north celestial pole.