Final answer:
Employers are required to report all workplace fatalities to OSHA.
Step-by-step explanation:
The correct answer is B. All workplace fatalities
According to OSHA regulations, employers are required to report all workplace fatalities to the Occupational Safety and Health Administration (OSHA) within eight hours of the incident. This includes any work-related fatalities that occur on the employer's premises or during work-related activities. Reporting workplace fatalities helps OSHA track and investigate workplace accidents, identify potential hazards, and ensure that employers are providing a safe working environment for their employees.