What typically causes ergonomic diseases?

The correct choice identifies that ergonomic diseases are typically caused by factors such as repetitive motion, forceful actions, and static postures. These elements contribute significantly to the development of musculoskeletal disorders, as they put undue stress on the body's muscles, joints, tendons, and nerves over time.

Repetitive motions can lead to conditions like carpal tunnel syndrome or tendonitis, where continuous use of certain muscles or joints exacerbates wear and tear. Forceful actions add additional strain, increasing the risk of injury due to the pressure placed on the musculoskeletal system. Static postures can lead to reduced blood circulation and muscle fatigue, further compounding the risk of discomfort and injury.

Meanwhile, while poor lighting conditions, inadequate rest, and overexertion can contribute to workplace discomfort or fatigue, they do not directly relate to the specific causes of ergonomic diseases in the same way that repetitive motion, forceful actions, and static postures do. Understanding these primary factors helps in designing better ergonomic practices that can prevent injury in various work environments.