The correct answer would be option C, One-ins.
When training a client for speed, agility and quickness, One-ins exercises would be the most appropriate.
Explanation:
Agility is the ability to move quickly and with ease. So when a person wants to be trained in speed, agility and quickness, then being an instructor, you must train him in the exercise of One-ins.
One-ins is an exercise in which a ladder is placed on the floor and the person is required to put foot in the block one at a time, and has to keep moving quickly from start to the end.
In this exercise, the arms are pumped and the chest is kept up. In this way, the person would be able to quickly move between the blocks and with the speed and ease after sometime.
Learn more about Significance of speed in exercise at:
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