The standards for Material Safety Data Sheets were issued by:

The standards for Material Safety Data Sheets (MSDS), which are now referred to as Safety Data Sheets (SDS), were issued by the Occupational Safety and Health Administration (OSHA). This regulatory agency is responsible for ensuring safe and healthful working conditions by setting and enforcing standards. In the context of chemical safety, OSHA's Hazard Communication Standard (HCS) requires that all hazardous chemicals in the workplace have a Safety Data Sheet available to inform employees about the hazards and safe handling procedures associated with those chemicals.

This requirement fosters a safer work environment by providing essential information regarding chemical properties, hazard identification, first aid measures, fire-fighting measures, and storage and handling protocols, among other key safety information. Thus, the establishment and enforcement of standards for Safety Data Sheets directly fall under the purview of OSHA, making it the correct answer.

The other institutions listed, such as the CDC, FDA, and EPA, have significant roles in public health and environmental safety, but their mandates do not specifically cover the requirements and standards for Safety Data Sheets as OSHA does.