The path a character takes to navigate a level of a video game is given in the following graph. Piecewise function with a linear function going from a closed point at negative 12 comma negative 4 to an open point at negative 6 comma 2 and another linear function from a closed point at negative 6 comma 4 horizontally to the point 2 comma 4 and then down to a closed point at 6 comma negative 4 and then another linear function from an open point at 6 comma negative 6 horizontally to a closed point at 10 comma negative 6

What is the domain?

–6 ≤ x ≤ 4
–6 ≤ x ≤ 4, x ≠ –6, 2
–12 ≤ x ≤ 10
–12 ≤ x ≤ 10, x ≠ –6, 6