Answer:
C
Explanation:
f(x)=0 at points of intersection of the graph of the function with x-axis.
From the diagram you can see that the graph of the function intersects x-axis at three points:
- somewhere between -3 and -2;
- somewhere between -1 and 0;
- at x=1.
Since x=1 is the value of x from the domain, then correct choice is option C.