For the Function Represented in the Graph, Determine the Domain

For the function represented in the graph, determine the domain or range, as requested.
-Find the domain.

A) [0, 4]
B) [-2, 4]
C) [-2, 2]
D) {-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5}