A child can pedal and steer a tricycle, climb stairs with both feet on each step, copy a circle, speak in three-word sentences, and know her name and gender. At what age were these milestones expected?

• A 18 months
• B 2 years
• C 4 years
• D 3 years ✓

Explanation

Riding a tricycle is the classic 3-year gross motor milestone, along with going upstairs with both feet per step, copying a circle, three-word sentences, and knowing name and gender. At 4 years the child alternates feet on stairs and copies a cross; at 2 years the child runs and uses two-word phrases but cannot pedal. This cluster therefore localizes development to 36 months.

Reference: Ghai Essential Pediatrics, 9th ed.

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Written and medically reviewed by the StethoPrep medical team.