Which item in the comparison chart takes the least amount of water to produce?

The production of wood

Explanation:

The production of wood requires the least water in the process. This is because there is no direct relationship between the wood and the water. In other words, not much water is needed to produce the wood as the timber-cutting process does not involve the need of water on the surface. The water is needed on the machines to cool the moving and rotating surfaces of the saws etc.