Use the following information to answer question 15-17.
Miriam conducted a survey of the students in her 8th-grade class to determine which of 7 Olympic sports were the most popular. Each student who responded to the survey selected 1 Olympic sport as his or her favorite. The circle graph below shows the number of students who selected each of the 7 Olympic sports. A total of 40 students responded to the survey.
15. To the nearest 0.1%, what percent of the students who responded to the survey selected Basketball?