Suppose you are trying to select 40 staff members (nurses, doctors, work clerks) to represent your hospital for an upcoming interview with a local paper. The interview is about their feelings about the changes in the hospital's policies on how they respond to emergencies and crises. Which of the following is the best sampling method in order for the views to be representative of the hospital?
a) Convenience Sampling
b) Stratified Sampling
c) Snowball Sampling
d) Cluster Sampling