To determine the individuals in this study, we need to identify who or what is being surveyed.
The table provides data categorized by grades (freshmen, sophomores, juniors, and seniors) along with the percentages of participation in sports, music, and clubs.
The key factor is to understand what these percentages represent. Each value in the table corresponds to the proportion of students in each grade participating in different activities (sports, music groups, and clubs).
Therefore, the table shows that the survey is measuring the participation rates of students in various activities. The individuals being surveyed, and hence the individuals in this study, are the students at Elmwood High School.
Thus, the individuals in this study are:
the students