Answer:
A. Real numbers from 0 to 8.
Step-by-step explanation:
Since, the given graph represents the depth of water pumped out of the backyard pound,
So, time ( in minutes ) must show the input value and depth ( in inches ) must show the output value,
Also, by the given graph,
Time is defined from 0 to 8 minutes,
Thus, the possible input values of the function of the graph are all the real number between 0 to 8,
Now, we know that the set of all possible input values is called domain of the function,
Hence, the domain of the given graph is,
Real numbers from 0 to 8.
Option 'A' is correct.