Problem: Consider the following patient scenario:
A mother comes in with a 9-month-old girl.
The infant is 68.5cm in length (25th percentile per CDC growth chart),
weighs 6.75kg (5th percentile per CDC growth chart),
and has a head circumference of 43cm (25th percentile per CDC growth chart).
Describe the developmental markers a nurse should assess for a 9-month-old female infant.