Answer:
If a biopsy of the quadriceps muscles (muscles on the front of the thigh) were taken from gold medal-winning speed skaters in the four following events, which would most likely have the SMALLEST percentage of type 1 muscle fibers?
A) 10,000 meters
B) 5,000 meters
C) 1,000 meters
D) 500 meters
Answer is 500 meters (D)