Final answer:
The correct grips for a deadlift are overhand, closed, and alternated, which correspond to answer c. I, II, and IV only. These grips help maintain control and prevent the bar from rolling during the lift.
Step-by-step explanation:
The proper grips to be used during the deadlift exercise are overhand (I), closed (II), and alternated (IV). Therefore, the correct answer from the provided choices is c. I, II, and IV only. An overhand grip is when both palms are facing the lifter. A closed grip means that the thumb is wrapped around the bar. An alternated grip is where one hand uses an overhand grip while the other uses an underhand grip. This grip combination can help prevent the bar from rolling out of the lifter's hands.