Final answer:
Water is responsible for carrying dissolved waste, aiding in digestion, and transporting nutrients throughout the body. It is essential for the absorption of water-soluble vitamins and maintaining bodily functions.
Step-by-step explanation:
The substance that carries dissolved waste products from the body, helps in the digestion of food, and carries nutrients throughout the body is water (D). Water performs many crucial roles in the body, such as transporting nutrients and oxygen to cells, aiding in digestion, regulating body temperature, and serving as a medium for biochemical reactions. Additionally, blood, which is composed mostly of water, picks up waste products from cells and transports them to organs like the kidneys and liver for excretion.
This process helps maintain the body's chemical balance. Water also facilitates the absorption of water-soluble vitamins, such as vitamins B and C, that are ingested through the diet and are essential for various enzymatic and bodily functions.