At what developmental milestone age does an infant typically sit unsupported without support, transfer objects from hand to hand, and babble consonant sounds?
Answer and explanation
Correct answer: D. 6 to 7 months
- Step 1: Standard developmental milestones indicate:
- Step 2: Sitting without support (tripos/independent) is achieved between 6 and 7 months.
- Step 3: Transferring objects across the midline from hand to hand and repetitive monosyllabic babbling ('ba-ba', 'da-da') typically emerge at 6 to 7 months.
Answer
6 to 7 months.
Why not the others: '3 to 4 months' is when head lag disappears and infant rolls front-to-back; '9 to 10 months' is when infant pulls to stand and uses a crude pincer grasp; '12 to 14 months' is when independent walking and first words emerge.
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