Answer:
Graph C would be the correct explanation of this Question
Step-by-step explanation:
In question , John drinks 8 cups of water , so
First day = 8*1 = 8 cups
Second day = 8*2 = 16 cups
Third day = 8*3 = 24 cups
Simularily Luke drinks 10 cups of water , so
First day , Second day and Third day would be 10 , 20 and 30 each .
Since the Graph is calculated for every multiple of 4 , 10 and 30 will be between 8-12 and 28-32 respectively.
Therefore Graph C is correct.