A nurse is providing teaching to a school-age child who has a new diagnosis of type 1 diabetes mellitus. Which of the following statements by the child indicates an understanding of the teaching?

A. This statement is incorrect. Insulin should not be frozen, as freezing destroys its effectiveness. Unopened insulin should be stored in the refrigerator, while opened insulin can be kept at room temperature for a limited time. Freezing insulin renders it unusable. B. While this range may be appropriate for some clients, target glucose levels for children can vary based on age and provider recommendations. This option is not the best indicator of understanding compared to a clear safety practice like preventing hypoglycemia during activity. C. This statement is incorrect. During illness, children with type 1 diabetes should continue taking insulin, even if they are not eating normally. Illness can increase blood glucose levels, and omitting insulin can lead to complications such as diabetic ketoacidosis. D. This statement is correct. Physical activity can lower blood glucose levels, increasing the risk of hypoglycemia. Eating a snack before exercise helps maintain safe glucose levels and demonstrates understanding of diabetes self-management.