Which of these is an example of multi-stage sampling? a.) Choosing Florida as a sample, then selecting a sample of O school districts within Florida, then sampling the number of children in households living in those areas. O b.) Dividing the population of Florida into groups and then making simple random samples of those groups. O c.) Randomly selecting households from the entire population of Florida. d.) Dividing the total population of Florida into groups and then selecting households in proportion from these groups. SUBMIT MY