Answer:
A, F
Step-by-step explanation:
Points B, C, D, E have x-values that are already in the domain of the red function graph. Domain values cannot be repeated if the relation is to remain a function. Those points must be excluded.
The red function graph is not defined for the x-values of points A and F, so those can be added to the relation and it will remain a function.
Points A and F could be included.
