What exemplifies the relationship between water demand and policies that subsidize crops requiring large amounts of water? 

A)  a delay 
B)  a positive feedback loop 
C)  a synergistic interaction 
D)  a negative feedback loop

Water Demand

The total quantity of water needed for various purposes, such as drinking, sanitation, agriculture, and industrial processes.

Positive Feedback

A process in which an initial change leads to further changes that reinforce the initial one, often leading to amplification of the effect.