1. Pole star rotates with the same period as the earth
  2. Pole star is a star of our own galaxy
  3. Sun and Pole star are in two opposite directions relative to earth
  4. Pole star lies in the axis of spin of the earth
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Answer: Option 4

Pole Star is always seen at one point in the sky whereas other stars are not; this is because Pole star lies in the axis of spin of the earth.

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