The data from the conditions indicated are as follows (see table below): a. Graph the data (using correct behavior analytic graphing methods for the applicable single-subject design. b. Determine if the intervention was effective. c. State a possible difficulty with the validity or reliability of the data. Days No Reinforcement Reinforcement No reinforcement Reinforcement 1 1 2 0 3 2 4 3 5 4 6 5 7 7 8 6 9 3 10 2 11 3 12 4 13 7 14 6 15 8 16 9