Final answer:
Vitamins are essential for growth, tissue repair, and immune function. They do not directly produce energy but help in metabolic processes related to energy production. Vitamins like A, C, D, and K are critical for maintaining various bodily functions.
Step-by-step explanation:
Vitamins are essential nutrients that play a critical role in maintaining good health. Vitamins have several key functions including:
- (A) Growth: Vitamins are vital for the body's growth and development. For example, vitamin D is necessary for bone growth and remodeling.
- (B) Tissue Repair: They help in the repair of damaged tissue, like vitamin C which is important for the synthesis of collagen.
- (C) Energy Production: While vitamins themselves do not produce energy, they act as coenzymes and facilitate metabolic processes that generate energy.
- (D) Immune Function: Vitamins like vitamin D enhance the immune system and protect the body from infection.
Therefore, the reasons why vitamins are essential to good health include (A) without vitamins the body could not grow, (B) without vitamins the body could not repair damaged tissue, and (D) without vitamins the body could not protect itself from infection. While (C) is related to energy production, it's important to note that vitamins do not produce energy directly; instead, they support the metabolic processes that generate energy.