Answer:
C. Stratified sample
Step-by-step explanation:
Stratified sample -
It is the method of sampling , where the distribution of the samples are done on the basis of certain partition in the complete population , is referred to as stratified sampling .
The distribution can be done on the basis of the geographical area or conditions , as the division makes the sampling method fast and efficient .
Hence , from the given scenario of the question ,
The correct option is C. Stratified sample .