In Fast Food Nation, the best reason that the author offers for the fast-food industry's strict regimen for productivity is that

Answer-it gives the companies power over their employees.

In Fast Food Nation, the best reason that the author offers for the fast-food industry’s strict regimen for productivity is that it gives the companies power over their employees. The answer is letter C. Schosller's excerpt clearly illustrated that the fast food restaurant are taking advantage of the people's money.