B. Eating a variety of healthy food.
It's not A because the body needs more than just protein. It can't be C because even though juice might have vitamins (and a LOT of sugar), it might not have pulp from the fruit that it is made out of. Pulp gives you fiber. It cannot be D because even if you don't eat anything fatty, some fats are actually necessary for your body. It's got to be B.
Carolus Linnaeus also known as Carl von Linné
What were the people drinking?
<span>Selection A is the most accurate. Nitrogen in the atmosphere cannot be used by most living things. For example, plants require nitrogen ions to function, and can only receive it through their roots. Atmospheric nitrogen does not provide an avenue for this uptake. Bacteria provide the nitrogen fixating needed for plants to be able to receive the proper form of nitrogen.</span>