Final answer:
The false statement about vitamins is that most are synthesized by the body; in reality, most vitamins need to be obtained from dietary sources as the body cannot produce them in adequate amounts.
Step-by-step explanation:
The false statement about vitamins is c. Most are synthesized by the body. Vitamins are indeed organic compounds that play a crucial role in various biochemical reactions by acting as cofactors or coenzymes. However, while some vitamins can be produced by the body such as certain amounts of vitamins D and K, the majority of vitamins cannot be synthesized in adequate amounts and must be obtained through the diet. Vitamins A, C, and the B-group vitamins are examples that typically need to be ingested as the body either cannot produce them at all or cannot produce them in sufficient quantities for good health. Thus, it's essential to acquire them from food to prevent vitamin-deficiency diseases.