Answer
(c) the force that a person exerts on a chair while sitting
Work Step by Step
The correct answer is: (c) the force that a person exerts on a chair while sitting
Options (a) and (d) are gravitational forces, so they are long-range forces. The force that makes a compass point north is related to Earth's magnetic field which is a long-range force. The force that a person exerts on the chair is a contact force, so it is not a long-range force.
