Answer
a. a compensating differential
Work Step by Step
Compensating the disparity is the idea of describing pay disparities in terms of non-monetary aspects of a task, such as quality of employment, working environment conditions, work ability, etc. In the case of Lucy and Ethel, Lucy does the job of welcoming customers who are simple, enjoyable and less stressful compared to Ethel 's job of cleaning the toilets, which is rough, boring and entails a dirty work atmosphere.
