Which one is the example of rest as well as motion at the same time?

The correct option is D

A person sitting in a moving car.

Explanation for the correct option (s)

1. A person sitting in a moving car is an example of rest as well as motion at the same time.
2. The person is in rest with respect to other passengers in the car, but at the same time, he is in motion with respect to the ground.

Explanation for the incorrect option (s)

1. A paper weight lying on a table is an example of a body being at rest, with respect to both the table and the ground.
2. A bird flying high in the sky is an example of a body in motion.
3. A person sitting in a stationary train is an example of a body being at rest, with respect to both the train and the ground.

Hence, option D is correct.