I have attached a screenshot for the complete question.
Answer:
A. g is the dependent variable
Explanation:
The given equation is:
g = 748 u
We can see that in this equation, we are converting the gallons into units.
Let's check each variable:
u depends on the usage of each consumer. Therefore, it does not depend on g in this equation. This means that u is the independent variable
g depends on the input u from the consumer. Therefore, g is the dependent variable in this equation.
Hope this helps :)