Final answer:
The parents of a 2-year-old child understand the nurse's safety teaching when they acknowledge the importance of not leaving hot liquids unattended.
Step-by-step explanation:
The emergency room nurse is providing discharge teaching to the parents of a 2-year-old child who sustained burns from a hot cup of coffee that had been left on the kitchen counter. The parents demonstrate correct understanding of the nurse's teaching when they state, "We will be sure to not leave hot liquids unattended." This statement indicates that they have recognized the importance of supervising potentially dangerous items around their child to prevent future accidents. Other statements regarding the understanding of the word 'hot', confining the child to his room, or installing a safety gate in the kitchen, while potentially helpful, do not address the direct cause of the injury which was the unsupervised hot liquid.