Final answer:
The parent's statements that indicate effective teaching are securing the crib, using a rear-facing car seat, and supervising tummy time.
Step-by-step explanation:
The parent's statement indicating that teaching has been effective are:
- "I will secure the crib with no loose bedding or toys" - This statement shows the parent understands the importance of creating a safe sleep environment for the infant.
- "I will use a rear-facing car seat in the back seat" - This statement demonstrates the parent's awareness of the proper car seat safety guidelines for infants.
- "I will supervise closely during tummy time" - This statement reflects the parent's understanding of the need for close supervision during tummy time to prevent any potential accidents or injuries.