Final answer:
The ordered pair for point C, which is five units to the right of the y-axis and nine units below the x-axis, is (5, -9).
Step-by-step explanation:
The student is requesting help with determining the correct ordered pair for point C based on its position relative to the x-axis and y-axis.
The x-coordinate of point C is five units to the right of the y-axis, which means it is positive, while the y-coordinate is nine units below the x-axis, which means it is negative. Therefore, the correct ordered pair for point C is (5, -9), which corresponds to option a).