OSHA responsibilities include both the creation and _________ of workplace law.

The selection of enforcement as the correct completion for the statement about OSHA's responsibilities highlights the agency's critical role in ensuring compliance with workplace safety laws and regulations. OSHA, the Occupational Safety and Health Administration, is tasked not only with creating standards that promote safe working conditions but also with enforcing these regulations to hold employers accountable for providing a safe environment for their employees.

Enforcement entails a variety of activities, including conducting inspections, investigating complaints, and ensuring that employers comply with established safety standards. This responsibility is essential in preventing workplace accidents and ensuring that employers adhere to the guidelines aimed at protecting worker health and safety.

In contrast, options like defense, investigation, and statistical analysis do not accurately capture the comprehensive responsibility of OSHA regarding workplace laws. While investigation does play a role in OSHA's functions, it is a subset of the broader enforcement mandate. Defense and statistical analysis do not adequately represent the proactive and reactive measures OSHA undertakes to maintain and uphold workplace safety standards. Therefore, enforcement is the most fitting term to describe OSHA's responsibilities in relation to its dual role in creating and managing workplace law.