The Nguyens dress their infant daughter in pink. Her little coveralls have lace decorations and her thin wispy hair is always adorned with a bow. What is the function of this constant announcing of the infant's assigned gender?

It signals how others should treat and respond to the infant.

Explanation:

Based on the information provided within the question it can be said that the constant announcing of the infant's assigned gender signals how others should treat and respond to the infant. The Nguyens are applying common female characteristics to their infant daughter so that people treat and respond to the infant as a girl as opposed to confusing the baby for a boy.