Which of these policies is most similar to the ming dynasty's method for selecting its government officials?
a. a state requires that all lawyers must devote at least some of their time to providing free legal advice to the poor.
b. a governor appoints his brother and niece to serve as judges in his state.
c. a state requires all medical school graduates to pass a standardized test before becoming doctors.
d. a country holds an election to make sure that all political leaders represent citizens' preferences.