​The following is NOT an example of a potential monitoring solution to moral hazard

A) ​blocking social network sites on company computers
B) closed circuit TVs throughout a warehouse
C) requiring a kitchen remodeling contractor to be 'bonded'
D) ​listening in on call center conversations

________ tend to be stressed, burned out, dissatisfied, in poor health, and they do not perform better than their more laid-back colleagues.