A large manufacturing company wanted to gather feedback on management from employees as part of an organizational development initiative. The company leadership randomly sampled 25% of employees from each of their 6 departments. These selected employees were required to fill out a survey asking their opinion on various qualities and skills of their direct supervisor. Each employee also had to enter his or her name to establish that everyone answered the survey who was required to do so. Can the company leadership expect the results of this survey to be reliable? Why or why not?

The results will probably be biased due to nonresponse bias.

The results will probably be biased due to response bias.

The results will probably be reliable because the use of a stratified random sample protects the survey from undercoverage bias.

The results may not be reliable because the chosen sample size was too small.

The results will probably be reliable because a random sampling method was used.