What is the domain of the function shown in the mapping?

a.) {x | x = –5, –3, 1, 2, 6}
b.) {y | y = –9, –6, 0, 2, 4}
c.) {x | x = –9, –6, –5, –3, 0, 1, 2, 4, 6}
d.) {y | y = –9, –6, –5, –3, 0, 1, 2, 4, 6}

Your answer should be A because the domain is what is going to be at the bottom of the graph and the range is whats on the side of the graph. This picture also is a function, so your answer should be A.

I hope this helped! 

please mark this as brainliest.

I'm not sure exactly but my best guess would be 1/4