Final answer:
The sumo deadlift requires a wider stance and narrow grip and primarily targets the glutes, inner thighs, and quadriceps.
Step-by-step explanation:
The deadlift variation that requires a wider stance and narrow grip is the sumo deadlift. In the sumo deadlift, the lifter stands with their feet wider than shoulder-width apart and their hands inside their knees on the barbell. This variation puts more emphasis on the glutes, inner thighs, and quadriceps compared to the conventional deadlift.