Final answer:
Employers must not expose employees to unprotected live electrical parts for any duration of time due to the risk of serious injury or death from electric shock. Safeguarding methods are required to protect workers. The correct option is a.
Step-by-step explanation:
The question relates to occupational health and safety standards concerning electrical safety in the workplace. Employers must ensure the safety of their employees by adhering to strict regulations that protect workers from exposure to hazardous conditions.
When it comes to working with or around live electrical parts, the answer to the question is A: Any duration. Employers must not expose employees to unprotected live electrical parts for any duration of time. This is because even a brief exposure to live electrical parts can result in serious injury or death due to electric shock.
It is crucial for employers to implement proper safeguarding methods, such as de-energizing and locking out electrical circuits, using insulating protective equipment, and providing adequate training to employees. The correct option is a.