Which muscle group is primarily responsible for moving the fingers apart?

The muscle group responsible for moving the fingers apart is the abductors. These muscles specifically facilitate the movement away from the midline of the hand, allowing the fingers to spread apart or abduct. In contrast, the other options play different roles in hand movement: flexors are responsible for bending the fingers, extensors help in straightening the fingers, and adductors bring the fingers back together toward the midline. Understanding the distinct functions of these muscle groups is crucial for comprehending hand mechanics and effective nail care practices.