A mother asks whether or not she should be concerned that her baby never opens his mouth to breathe when his nose is so small. Which of the following is the nurse's best response?

"Babies usually breathe in and out through their noses so they can feed without choking."

"You are right. I will report the baby's small nasal openings to the pediatrician right away.*

*Everything about babies is small. It truly is amazing how everything works so well."

"The baby does rarely open his mouth but you can see that he isn't in any distress.