A. health and safety professionals.
Explanation:
Safety regulations are forms of professional advice given to employers and employees to ensure a safe and healthful work environment e.g adequate lighting, heating, ventilation and workspace etc, to prevent injury or even death. These regulations are legal, and may be enforced by appropriate agencies where necessary.
They are could be made by government ministries, health and safety professionals or appropriate organizations so that adequate safety of workers is ensured against disasters.