An athlete is ordering new running shoes online from a European shoe company. In U. S. sizes, she normally wears a size 8 or 8. 5, depending on the brand of shoe. In order to make sure she orders the correct size from the European shoe company, she measures her foot, and finds that it is 24. 5 centimeters long. Based on the size chart, which European shoe size will probably be the best fit for the athlete?