The correct answer is: b. inferential.
Inferential statistics refer to statistical testing methods that involve the use of calculations and procedures that enable researchers to draw inferences from a representative population, and generalize them to the entire population in question.
In this instance, by administering a survey to a randomly assigned group of students at Great Mountain High School, the sample the data is collected from is presumably a representative sample. In inferential statistics, findings obtained from a small representative sample are generalized to the entire population- in this instance, the students at Great Mountain High School.
Thus, in this instance, where the survey indicated that the administration of at Great Mountain High School has a 60% approval rating, the kind of statistic is offered is inferential.