In the situation of a skydiver falling through the air, the relevant forces are:
Gravity and air resistance.
- Gravity: This is the force that pulls the skydiver down towards the Earth.
- Air resistance: Also known as drag, this force opposes the motion of the skydiver as they fall through the air.
The normal force does not apply in this scenario because the skydiver is not in contact with a surface that would exert a normal force.
Therefore, the correct response is gravity and air resistance.