What is the main focus of NIOSH?

The primary focus of the National Institute for Occupational Safety and Health (NIOSH) is indeed on the training and education of workers. NIOSH is dedicated to ensuring that workers are informed about safe practices and equipped with the knowledge necessary to prevent work-related injuries and illnesses. They conduct research and produce recommendations on safe workplace practices, as well as creating educational programs to disseminate this crucial information to both workers and employers.

While the other choices involve important aspects of workplace safety, they don't represent the central theme of NIOSH's mission. Providing enforcement actions and issuing citations for safety violations fall under the purview of agencies like the Occupational Safety and Health Administration (OSHA), which focuses on enforcing regulations. Promoting environmental safety standards is often a concern of various environmental protection agencies, which is a different scope compared to NIOSH’s concentration on worker health and safety education and research.