A nurse is reinforcing discharge teaching about car seat safety with the guardian of a newborn. Which of the following statements by the guardian indicates an understanding of the teaching?
a) I will place the car seat in the front seat to keep a closer eye on the baby.
b) The car seat should be rear-facing until my baby is at least 2 years old.
c) I'll use a second-hand car seat that I got from a friend to save money.
d) Once the baby is asleep, it's fine to unbuckle them from the car seat.