Answer:
D. New allergens that people are not aware of may be introduced.
Explanation:
While increasing mineral contents or vitamins, people might have a strong allergy to a certain type of ingredient that the scientists added in to the food.
It's empty or fairly large, making the sounds from your hands bounce of the walls and therefore having it echo
She should write down her average performance on her test when she sleeps, and when she doesn't.
This is false...Hope this helps!! Tell me if im wrong though...