Answer
See graph and explanations.
Work Step by Step
See graph; the speed started at zero and increased with time linearly due to the Earth's gravity. At the time when the parachute was opened, the air resistance caused a sudden change in the speed. In the case presented in the graph, the parachute had a strong effect and caused the speed to reduce exponentially with time and reach a constant speed before landing. Depending on the type of the parachute, it may also happen that the speed will keep increasing at a slower rate until the speed reaches a limit.
