A five-month-old boy is brought to the doctor’s office by his mother for a well-child visit. Which of the following, if observed by the nurse, would reflect a developmental delay?
A
The child, when lifted by the arms, displays head lag.
explanation
Head lag should disappear by the end of the second month. A five-month-old can sit with support, babbles with no real words, and has doubled their birth weight.
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