Question

which statement best explains why water is essential for all living things?
○ water makes up 65% of human beings.
○ water is an essential component of blood.
○ water covers 75% of earths surface.
○ water is necessary for cellular functions.

Explanation:

The question asks for the best reason water is essential for all living things. The first two options only apply to humans/animals, not all life. The third option describes Earth's surface, not a biological necessity. The fourth option applies to all living organisms, as all cells rely on water for core processes like nutrient transport, chemical reactions, and structure.

Answer:

Water is necessary for cellular functions.