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Vitamin A.
Hope i helped you!
This is because the heavy metal ions will act on the proteins in the milk rather than the body
Food pyramid, because it is a healthy way to show what your eating, and the foods you need to cut out, and the foods you need to eat more.
It is D, sharing appreciation for what is being said. Both A and B aren't crucial to being a good listener, in fact in practice they effectively draw attention to yourself, which would be fine if the question was regarding being a good conversationalist. Additionally, C is just completely irrelevant, that wouldn't even be a good conversation practice, let alone a trait important to listening.