What is the role of water in the human body?

Water plays a fundamental role in the human body primarily by transporting nutrients and waste products. It is a vital component of blood, which is responsible for carrying essential nutrients like vitamins, minerals, and glucose to cells throughout the body. Additionally, water helps facilitate the removal of waste products, such as carbon dioxide and urea, ensuring that these substances are effectively excreted from the body. This transportation function is essential for maintaining homeostasis, as it ensures that cells receive the necessary substances they need to function optimally while also allowing for the efficient removal of by-products generated from metabolic processes.

While other options mention important functions—such as energy provision, muscle building, and hormone production—these aspects do not highlight the primary and critical role that water plays in nutrient and waste transport. Therefore, recognizing water's role in this context is vital for understanding its importance in overall bodily functions and health maintenance.