Solution to Infant reflex

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The correct answer is 1. The asymmetrical tonic neck reflex (ATNR),  a primitive reflex, is present at birth.  When the infant turns its head to one side,  the upper and lower extremities on the face-side extend while the upper and lower extremities on the skull-side flex. The ATNR typically disappears as an infant's nervous system matures and as they develop more controlled and purposeful movements - by around 6 months of age.

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