Running times in the 100-meter dash have decreased due to
A) a decrease in illegal drug use.
B) better corporate sponsors.
C) use of equipment that reduces drag.
D) use of equipment that increases drag.

Question

Quizplus · Accepted Answer

The use of equipment such as high-tech running shoes and clothing that reduces drag has contributed to faster running times in the 100-meter dash. There have been cases of illegal drug use among athletes, but this is not the main reason for the decrease in running times. Better corporate sponsors may provide financial support, but this does not directly impact the performance of athletes. The use of equipment that increases drag would actually slow down the runners, so it is not a contributing factor to faster running times.

Running Times in the 100-Meter Dash Have Decreased Due to