Final answer:
Frank used a scale of 1:8000 for the drawing.
Step-by-step explanation:
To find the scale used by Frank for the drawing, we need to determine how many times smaller the drawing is compared to the real-life object. The volleyball court in the drawing is 2 millimeters long, while in real life it is 16 meters long. To find the scale factor, we divide the length of the real object by the length of the drawing:
Scale factor = Length of real object / Length of drawing
Scale factor = 16 meters / 2 millimeters = 8000.
Therefore, the scale used by Frank for the drawing is 1:8000 (option d).