A nurse is teaching a new parent how to correctly use a car seat.Which of the following statements by the parent indicates an understanding of the teaching?

I should keep my baby in a rear-facing car seat until they are 2 years old.

I should strap my baby in the seat with a four-point harness.

I should place the shoulder harness in the slots above my baby's shoulders.

I should position my baby's car seat at a 30-degree angle.