Respuesta :
Answer:
C. Stratified Sampling
Explanation:
Stratified sampling is a form of sampling in which the populations in divided into sub groups called strata, each sub groups must be representative of all the elements found in the population. After this, a random sampling method is applied to select for study as seen in the study conducted in this question.
Answer:
C) Stratified
Explanation:
It is stratified sampling because you want to get information from groups that are mutually exclusive while also maintaining representative sample of the population.