What Was Discovered When the Mean Ages for Best Performance

Multiple Choice

What was discovered when the mean ages for best performance of Olympic and professional athletes in a variety of sports were charted over time?

A) Ages of best performance improved over time.
B) Absolute performance in most events improved over time.
C) Tasks that required speed of limb movement peaked in the early thirties.
D) Tasks that depended on endurance typically peaked in the early twenties.