Final answer:
The given data represents a linear function.
Step-by-step explanation:
The given data, X -4 -2 0 2 4, y 6 3 0 3 6, represents a linear function. A linear function is a function whose graph is a straight line. In this case, if we plot the values of X and y on a graph, we will see that they form a straight line. Therefore, the answer is A. A linear function.