Which statement about worker motivation is most consistent with the findings of the Hawthorne studies?

Group of answer choices

The best way to motivate employees is to offer pay raises, bonuses, and other financial incentives.

Worker motivation is not important in determining the level of worker productivity because productivity is primarily determined by external factors such as the speed of the machinery the employees operate.

Worker motivation will fall significantly if lighting conditions, temperature, and other elements of the physical environment are not kept at their optimal levels.

Employees are more motivated if they feel they are part of a special group or project.