Potential sample 2: The sample consists of students at various high schools in Adelaide, and the population is high school students in Adelaide. The sample could be 20 students from each year level (7, 8, 9, 10, 11, 12) at 7 high schools, which would have a total of 840 participants. This sample would be highly representative of the population. The desired design may be experimental/observational, which would be easily accessible due to the researcher having relatively easy access to high school students.