The correct answer is: Can live.
Water is essential for life. It is the most important nutrient for humans and other animals. We need water to survive. We can live for weeks without food, but only a few days without water. Water is used in every process in our body. It helps to regulate our body temperature, transport nutrients and oxygen, and remove waste products.
Option A: Can, living is incorrect because it is not a complete sentence.
Option B: Can, live is correct because it is a complete sentence that states that we can live.
Option C: Can, be is incorrect because it is not a complete sentence.
Option D: Can be, lived is incorrect because it is not a complete sentence.