For the Function Represented in the Graph, Determine the Domain $\{ x \mid - 1 \leq x \leq 1 \}$

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

A) $\{ x \mid - 1 \leq x \leq 1 \}$
B) $\{ - 5 , - 4 , - 3 , - 2 , - 1,0,1,2,3,4,5 \}$
C) $\{ x \mid 1 \leq x \leq - 1 \}$
D) $\{ x \mid - 4 \leq x \leq 1 \}$