What is the correct sequence of cephalocaudal development milestones in order from earliest to latest?

• A. Lift head when prone, Sit unsupported, Crawl, Walk, Gain complete head control
• B. Lift head when prone, Gain complete head control, Sit unsupported, Crawl, Walk
• C. Sit unsupported, Crawl, Walk, Lift head when prone, Gain complete head control
• D. Lift head when prone, Sit unsupported, Crawl, Gain complete head control, Walk

Answer: (B)

Cephalocaudal development follows a head-to-tail progression, so infants first gain control of the head and neck before learning to control the trunk and lower limbs. Lifting the head when prone is the earliest milestone because it establishes neck strength and the ability to hold the head up against gravity. After that, gaining complete head control means the infant can maintain the head erect and midline with less support, which is essential groundwork for sitting and further movement.

Sitting unsupported comes next because it requires the trunk and hip muscles to be strong enough to maintain an upright position without support. Once the core stability is present, crawling develops as the infant coordinates arm and leg movements while supporting the body and maintaining balance. Walking is the final milestone, needing mature balance, leg strength, and coordinated motor planning.

This order reflects how neuromuscular control builds from the head downward to the rest of the body. Other sequences place sitting or later milestones before head control, which contradicts this natural progression.