The swimmers who were optimists performed the same as or better than their original, actual results.
Explanatory style is a style that show how a person explain to their own self the good or bad reason why they experience what happen to them.
Most people tend to use explantory style when they have a negative outcome after an event so as to know the cause or what lead to the negative outcome.
Therefore the swimmers who were optimists performed the same as or better than their original, actual results.
Learn more about explanatory style here:https://brainly.com/question/9999833