Answer:
a. higher
Step-by-step explanation:
When the water level started to go down in Dry Gulch, people took the step of digging more aquifer to fulfill the requirement of the water. They did not took the initiative of asking a sustainable use of water or deciding to save water. In turn, they adopted to extract more water by digging more wells. On the other hand, the people in the other town decided to save water and agreed upon using the water carefully. Hence, in this scenario, the use of water had gone high in Dry Gulch than the other town.