These two graphs represent and selection. A histogram with x-axis from 0 to 50 and y-axis from 0 to 100. Bars steadily increase from (40, 5) to (24.84, 55) and then steadily decrease to (40, 3). A histogram with x-axis from 0 to 50 and y-axis from 0 to 100. Bars increase quickly then decrease, increase again, and decrease quickly. a. directional; stabilizing b. stabilizing; disruptive c. disruptive; static d. static; directional