Answer:
"I need to buy special dietetic foods."
Explanation:
Based on the information provided within the question it can be said that the main statement that indicates that the teaching was successful would be "I need to buy special dietetic foods.". This is because diabetes mellitus is a group of diseases that result in too much sugar in the blood, therefore the individual affected with this needs to buy specific foods in order to lower their blood glucose levels and maintain them low.
