You design and give a survey to your homeroom class. The survey includes the question, “To the nearest half hour, how many minutes do you exercise each day?” Suppose a national gym franchise decided to calculate the number of minutes teenagers exercise each week by using the results of your class survey. What is the population for this problem?

A.
your homeroom class

B.
teens who exercise

C.
teenagers across the country

D.
gym members

C. teenagers across the country.