Wind resistance as speed increases.

increases

Explanation:

The increase in speed leads to an increase in air/wind resistance.  Eventually, the force of air/wind resistance becomes large enough that it balances the force of gravity.  At this instant in time, the net force is 0 Newton.  At that point the object will stop accelerating.  It's velocity is said to be terminal at that moment.

answer; i believe the correct answer is (ground);