Final answer:
The parents' statement about dressing their baby in lightweight clothing for sleep indicates an understanding of SIDS prevention, aligning with recommendations to avoid overheating and suffocation risks.
Step-by-step explanation:
The correct statement by the parents that indicates an understanding of the discharge teaching for an infant at risk for sudden infant death syndrome (SIDS) is: "I will dress my baby in lightweight clothing to sleep." This practice aligns with SIDS risk reduction recommendations, such as avoiding potential suffocation hazards in a baby's crib, not using heavy blankets that could cause overheating, and ensuring the infant sleeps on their back. The key points to remember for reducing the risk of SIDS include placing infants on their backs for sleep, avoiding the use of soft bedding materials in the crib, and maintaining a smoke-free environment.