There Are Five Cities in a Politician's District but Redistricting

Multiple Choice

There are five cities in a politician's district but redistricting has been proposed for the state. The politician would like to know which city he should try to remove from his district. He plans to conduct a survey to find out his approval rating. Which one of the following sampling plans would be most useful for his purposes?

A) Take a stratified sample with political parties as the strata.
B) Take a stratified sample with the five cities as the strata.
C) Take a simple random sample across his district.
D) Take a cluster sample with the five cities as clusters.