The Graph Below Shows Distance as a Function of Time

Multiple Choice

The graph below shows distance as a function of time (measured in seconds) for an Olympic swimmer racing in the 100-meter butterfly. Determine the best answer for the average speed of the swimmer for the 100-meter butterfly. (Rounded to the nearest hundredth)

A) 1.39 meters/sec
B) 70 meters/sec
C) 1 meters/sec
D) 0.72 meters/sec
E) 100 meters/sec