Which statement is not correct about early motor milestones?

• A. At age 6 years, a child should hop on one foot for a distance of 20 feet.
• B. At age 3 years, a child should pedal a tricycle for a short distance.
• C. At age 24 months, a child should place themselves into a small chair.
• D. At age 1 month, an infant should roll over from back to tummy and tummy to back.

Answer: (D)

Early gross motor skills develop in a head-to-toe sequence, with control building from neck and trunk to limbs. A one-month-old is typically just starting to show reflexive movements and some head control; rolling over is not something most infants do this early. Rolling from tummy to back and from back to tummy usually appears several months later, commonly around 4 to 6 months, with some variation among babies. That’s why describing rollin g at one month isn’t correct.

The other statements fit typical development for the ages cited: around three years, children begin to pedal a tricycle as leg strength and coordination improve; by two years, many children can sit themselves down in a small chair as postural control builds; and by around six years, hopping on one foot for a notable distance reflects that more advanced balance and leg strength are in place.