To determine the individuals in this study, we need to identify the primary subjects or entities being analyzed or surveyed.
Looking at the given data from Elmwood High School, it provides percentages of different activities (sports, music, clubs) participated in by students across various grades (freshmen, sophomores, juniors, and seniors). The key feature here is that the data is centered around different grades of students and their participation in these activities.
This clarifies that the individuals, the main subjects being surveyed, are the students themselves. Therefore, the individuals in this study are:
the students