Which of the following best explains the importance of water to humans

Water is important for multiple reasons. One, it is essential for life. All humans need water in order to survive. Two, it is useful for cleaning purposes, especially in third-world countries. Water, whether it is a river or ocean, is an important mean of trade, transportation of goods, and travel. In some cases, such as Great Britain and Japan, it is a defense mechanism. Britain is nearly impossible to conquer because it is an island nation. Hope that helps!