What happens to the mass of a skydiver when he is free falling?

The mass of a skydiver remains constant while they are free falling. Mass is a measure of the amount of matter in an object and does not change regardless of the forces acting on it, such as gravity or air resistance. However, the skydiver's weight, which is the force of gravity acting on their mass, changes due to the effects of air resistance as they accelerate and reach terminal velocity.