pls answer it correctly.


which of the following situations uses stratified random sampling?
A.the names of the student in a class are placed in a bowl,and the teacher selected three students to represent the whole class.
B.the students lined up by class number every 8th student was chosen to represent the whole class
C.the class was divided into three groups according to the students addresses.One represenatative of each cluster was chosen to come up with three representatives of the entire class.
D.the class was divided into three groups according to the IQ Level,one from each group was chosen randomly to represent the whole class​


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