A 7-month-old girl is brought to the office for evaluation. Her parents report that she has not yet started babbling and rarely smiles at them. She can sit with support but cannot sit independently. She reaches for toys with a raking grasp. Birth history is unremarkable and she was born at 39 weeks' gestation. Physical examination shows normal growth parameters. She makes inconsistent eye contact and does not turn toward sounds. Hearing screening at birth was normal. Which of the following milestone patterns is most concerning and warrants urgent evaluation?
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AAbsent babbling and poor social smile at 7 months
BSitting with support but not independently at 7 months of age
CUsing raking grasp rather than pincer grasp for reaching toys
DNot yet walking independently or cruising along furniture
ESpeaking fewer than three words at this developmental stage
✓ Correct answer: A. Absent babbling and poor social smile at 7 monthsRed flags warranting urgent evaluation include no social smile by 2 months and no babbling by 9 months. At 7 months, absent babbling combined with poor social engagement (rarely smiles, inconsistent eye contact) represents significant delay in multiple domains requiring immediate assessment. Distractor1 describes normal development (sitting independently expected 6-9 months). Distractor2 reflects normal fine motor development (raking grasp appropriate for age). Distractor3 is less concerning as independent walking develops 9-15 months. Distractor4 describes normal variation in language timeline.
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