A scientist is testing the effectiveness of a new study method for high school biology students. The scientist selects a random group of 40 students from all students enrolled in biology at one particular high school. After several weeks using the new method, these students perform better on assessments. What is the largest group to which the results of this study can be generalized?
The 40 students in the study
All biology students at the high school
All high school students in the city
All students in the school district
