Final answer:
The best answer is to discard any remaining milk in the bottle after a child has fed from it to ensure freshness and prevent bacterial growth.
Step-by-step explanation:
The best answer for the question is option D. Discard any remaining milk in the bottle after a child has fed from it. This is important because leftover milk can spoil and become a breeding ground for bacteria, which can lead to digestive issues or illnesses if consumed. It is important to prioritize the child's health and ensure the milk is fresh and safe to consume.
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