A physical therapist is assessing a 10-month-old child who cannot sit independently. According to normal developmental milestones, this finding is:
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A
Within normal limits, as independent sitting occurs at 12 months
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B
Delayed, as independent sitting typically occurs by 6-8 months
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C
Within normal limits, as independent sitting occurs at 10-12 months
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D
Delayed, as independent sitting typically occurs by 4-5 months