Final answer:
The client knows when the insulin's onset occurs by eating a snack around three o'clock each afternoon.
Step-by-step explanation:
The statement that indicates the client knows when the onset of the insulin occurs is 'I will eat a snack around three o'clock each afternoon.' This statement shows that the client understands that the insulin's onset occurs at a specific time, which is around three o'clock each afternoon. Insulin injections allow transport and storage of glucose to increase blood glucose levels after consuming a meal.
By eating a snack around three o'clock each afternoon, the client ensures that they have enough glucose in their system to match the action of the insulin. This knowledge is important because it helps the client maintain stable blood glucose levels and prevent hypoglycemia.