D. All students in each grade. It can't be A since the survey is for the students, it defeats the purpose. It can't be B and C since those are too biased. Basing the student population on one factor like gender and sports is not logical in the context of this survey.
Answer:
transposition method
Step-by-step explanation:
it helps to find that value of y
Answer:
B
Step-by-step explanation: