How fast can Michael Phelps run a mile?
Which 21-year-old became the first gold medalist for Singapore by beating Michael Phelps in the 2016 Rio Oympics 100 m butterfly swimming event?
[A] Joseph Schooling
[B] Chad Le Clos
[C] Laszlo Cseh
[D] Kosuke Hangino
What is the Influence of water temperature on swimmer performance?