The correct answer is A. OSHA
Step-by-step explanation:
The Occupational Safety and Health Administrator (OSHA) is the agency in the U.S. that establishes conditions and parameters to guarantee workplace safety or that all workers work in an environment in which their safety and health are preserved. Due to this, the OSHA is in charge of issuing standards that apply to all workplaces, doing inspections to monitor standards are being followed, keeping a record of safety or health incidents for further actions, and acting in case entities are not follow the standards usually through fines. According to this, it is the OSHA the federal agency responsible for monitoring workplace safety.