Final answer:
The most important property of water for delivering nutrients to cells of the human body is its ability to dissolve substances.
Step-by-step explanation:
The most important property of water for delivering nutrients to cells of the human body is its ability to dissolve substances. Water is a polar molecule, meaning it has a slight positive charge on one side and a slight negative charge on the other side. This polarity allows water to dissolve many substances, including nutrients, and transport them to cells throughout the body. For example, water carries dissolved nutrients from the digestive system to cells via the bloodstream.