________ is the time taken by the Earth to return to a given point in its orbit with reference to a fixed star.

A. Lunar year

B. Sidereal year

C. Solar year

D. Tropical year

Answer: Option B

Solution(By Examveda Team)

Because, for all intents and purposes, the sky is "fixed", a sidereal day is when the earth rotates 360°. A sidereal day is 23 hours 56 minutes and 4.09 seconds long. A sidereal year is the time it takes for the sun to return to the same position with respect to the stars.