Fine motor skills, as opposed to gross motor skills, have to do with:

• A. Medium muscles, such as muscles in the shoulders
• B. Small muscles, such as muscles in the hands, wrist, and fingers
• C. Large muscles, such as muscles in the legs
• D. The skills of a motorized robot

Answer: (B)

Fine motor skills involve control of small muscle movements, especially in the hands, wrists, and fingers, to perform precise tasks like writing, buttoning, or picking up small objects. In contrast, gross motor skills use larger muscle groups for big movements such as walking, running, or jumping. So the correct focus is on the small, dexterous muscles in the hands and fingers. The options mentioning shoulder or leg muscles describe larger, whole-body actions, and the idea of a motorized robot isn’t part of how we classify human motor skills.