An Employer Following the Human-Relations Approach Would Probably Follow Which

An employer following the human-relations approach would probably follow which policy?​

A) Give each employee a variety of meaningful tasks.
B) ​Start by doing research to find the simplest, most foolproof way to do the job.
C) ​Supervise each employee closely and adjust salaries based on performance.
D) ​Write a manual that describes exactly what to do in considerable detail.