The three stressors that influence overexertion are related to the environment, human physiology, and the quality of:

The correct answer highlights the importance of rehabilitation efforts as a critical stressor affecting overexertion. Rehabilitation efforts refer to the processes and strategies implemented to recover from injuries or physical strain, ensuring that individuals are fit for duty. When rehabilitation is inadequate, employees may return to work without fully recovering, which can lead to increased risks of overexertion and further injuries.

Considering the other stressors in the context of overexertion, the quality of training, ergonomics, and equipment also plays a significant role, but they do not directly address the recovery aspect that rehabilitation efforts encompass. Training quality ensures personnel are equipped with the necessary skills and knowledge to perform their tasks safely, while ergonomics focuses on designing work environments that reduce strain. Equipment quality pertains to the tools and machinery used in performing duties.

However, if an individual has not adequately recovered from physical stress or injury, even the best training, ergonomic design, and equipment will not completely mitigate the risk of overexertion. Therefore, emphasizing rehabilitation efforts underscores the need for a comprehensive approach to managing stressors related to physical exertion in the workplace.