For question 1, the answer is D - eat a balanced diet. This is the most natural and fulfilling way to get your intake of vitamins and minerals. For question 2, the answer is A. The kidneys are important during digestion as they filter fluid passing through them for waste and release and retain water by controlling urine production. The answer to question 3 is D. Hypervitaminosis, or unusually high storage levels of a vitamin, is usually caused by vitamins that get stored in fat, including Vitamin A - but not Vitamin C. The answer to question 4 is C. Omega 3 fatty acids have a positive impact on bone health by making them less brittle and can be used to help combat osteoperosis. The answer to question 5 is D. Exchange lists for people with diabetes group foods together if they are alike in equal relative quantities, so any food on the list can be exchanged for any other.