The trait which encapsulates an athlete's ability to deal effectively with, and thrive through pressure, challenge and adversity when things are going well, in addition to when things are challenging is:

Question

Quizplus · Accepted Answer

The trait described is mental toughness, which is the ability to persevere and maintain focus in the face of adversity. While motivation, confidence, and concentration are all important aspects of mental toughness, none of them fully encapsulate the ability to handle pressure and bounce back from setbacks. Therefore, option C is the best choice.

The Trait Which Encapsulates an Athlete's Ability to Deal Effectively