Concept:The proximodistal principle states that development proceeds from the center of the body outward toward the extremities.
Explanation:First, understand the two main sequences of physical development: proximodistal and cephalocaudal.
The proximodistal sequence means control of the central body (torso, spine) develops before control of the limbs (arms, legs, fingers).
For example, a baby first gains control of the trunk, then learns to move the shoulders, then the arms, and finally the hands and fingers.
Now evaluate each option:
Option A (vision before arms) relates to cephalocaudal or sensory development, not proximodistal.
Option B (cognitive before language) is about general developmental sequences, not a physical principle.
Option C: "Infants first learn to move their torso and then their arms and legs" directly follows the proximodistal rule – core to periphery.
Option D (cooing before babbling) describes vocal language milestones, not body movement.
Thus, only option C correctly illustrates the proximodistal principle.
Answer:C. Infants first learn to move their torso and then their arms and legs.