A taxi company wants to implement a policy to diminish the risk of falling asleep behind the wheel

A taxi company wants to implement a policy to diminish the risk of falling asleep behind the wheel. The company has the greatest number of accidents due to drivers falling asleep on the evening shift between 9 p.m. and 11 p.m. The company is considering either opening the company gym for use by the cab drivers between 1 p.m. and 3 p.m. or making free coffee available during the dinner hour (6 p.m.–7 p.m.). Which policy would the research about the risk of falling asleep support implementing?