Respuesta :
The students in each grade, that way it wont focus just on one group like the club, the teachers, or the boys.
Answer:
All students in each grade is the right answer.
Step-by-step explanation:
All students in each grade represents the population the teacher should take a random sample from to get the best results for his survey. In this group all the boys and the girls will be asked the question - if they prefer a model United Nations activity or a student government activity in a fair manner.