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5. When it comes to setting the EAR or IA of nutritional ingredient like zinc, what is the main goal?

Including enough for a person to be healthy but not so much that it could cause harm.

Covering all possible nutritional needs by giving everyone the same amount of the nutrient.

Making sure that there is at least a small amount of the ingredient so that it can be listed.

Supplementing the deficiencies in the normal American diet by adding more nutrients.