Answer:
Milk and water.
Step-by-step explanation:
Milk is good for children because it's a very good source of energy and protein, and contains a wide range of vitamins and minerals, including calcium, which is a necessity for young children to build healthy bones and teeth.
Water is also a good option because it keeps children hydrated, prevents cavities, and even regulates their weight. It's also important as it keeps one's temperature normal.