Using sampling concepts, the best way for her to survey the students is:
Rae will ask 75 students at her school.
It is a common statistics practice, when we want to study something from a population, we find a sample of this population, which is a group containing elements of a population. A sample has to be representative of the population, that is, it has to involve all segments of the population.
In this problem, we want to find a group containing a fraction off the 600 students. For the group to be representative, it must involve students of every grade, being them on the student body or not, hence the best way is given by:
Rae will ask 75 students at her school.
More can be learned about sampling at https://brainly.com/question/25122507
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