Answer: Simple Random Sampling.
Explanation:
When a research is conducted, it’s almost impossible to collect data from everyone involved in that particular group, that is why a sample is selected. A sample are the individuals who will take part in the research.
In the question, the random sampling method is used. One manufacturing facility was chosen out of seven to know the effects a new sick leave policy has on employees absenteeism. In a simple random sample, all the members of a population have an equal chance of selection. Any of the seven manufacturing facilities have an equal chance of selection.