Answer:
A person walks up a flight of stairs.
Wind lifts a balloon into the air.
A weightlifter holds a barbell straight overhead
Explanation:
<u>Gravitational potential energy is possessed by a body due to virtue of its position (height). </u>
A body placed some height above the ground possesses gravitational potential energy which is equal to the work done to lift it.
Thus, a person who walks up a flight of stairs, a weightlifter holding barbell straight overhead and wind lifting balloon into the air have gravitational potential energy.