The figure best illustrates which developmental principle?
- A
Motor development reverses in toddlerhood
- B
Milestones occur at exactly the same age for all children
- C
All children walk before they sit
- Dcheck_circle
Motor development follows an orderly sequence with overlapping windows
Explanation
Motor milestones emerge in a predictable sequence (sit, then walk, then run) but with normal variability in the age at which any individual child achieves each one—producing overlapping cumulative curves.