Which population would be good to survey to determine 7th grader's favorite books?
A). 10 students in one 7th grade class
B). 5 students from each of the six 7th grade classes
C). All 400 7th grade students
D). 15 seventh graders that sit together at lunch
C). All 400 7th grade students
Surveying all 400 7th grade students would provide a more representative sample of the entire grade level and would give a more accurate reflection of the favorite books among 7th graders.