O 0 0 0 All employees in a building are sorted by the floor that they work on, and researchers randomly select 5 floors to participate in a survey about employee satisfaction. Everyone on the 5...

Extracted text: O 0 0 0 All employees in a building are sorted by the floor that they work on, and researchers randomly select 5 floors to participate in a survey about employee satisfaction. Everyone on the 5 selected floors is included in the sample. This is an example of... stratified random sampling. quota sampling. haphazard sampling. cluster sampling.