Answer:
a. limited
Step-by-step explanation:
Water is renewable through the water cycle but that does not make it unlimited. Only 3% of the water on Earth is fresh water and that is not distributed evenly across the world, so some areas have more than others. Additionally, the world's growing population makes the amount of water on Earth less and less sustainable. Finally, like many renewable resources if humans overuse or use it poorly it is possible to use it faster than it can replenish. For these reasons, water is seen as a limited resource.