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Answer:

One year has passed when (B.) The Earth has made one complete revolution around the Sun.

• One complete revolution of the Earth takes 1 year or 365 days.
• While one complete revolution of the Earth takes 1 day or 24 hours.

Other Information :)

• Revolution: The movement of the Earth on its orbit towards the sun.
• Rotation: The movement of the Earth on its own axis, it rotates.