Answer:
D. -5 ≤ x ≤5
Step-by-step explanation:
Domain is the set of x-values that can be inputted into function f(x).
We see from the graph that our x-values span from -5 to 5. Since both are closed dots, they are included in our domain:
[-5, 5]
or
-5 ≤ x ≤ 5
