Which organization sets voluntary standards for the certification of products?

The correct choice is ANSI, which stands for the American National Standards Institute. This organization plays a critical role in setting voluntary consensus standards for a wide range of products and services across various industries. ANSI oversees the development of these standards through a collaborative process, ensuring that they reflect the latest knowledge and practices in safety, quality, and performance.

By establishing these standards, ANSI helps manufacturers create products that meet specific safety and operational criteria, thereby protecting consumers and facilitating fair competition in the marketplace. It's important to understand that ANSI’s standards are not mandatory but serve as a guideline for best practices that enhance safety and efficiency.

The other organizations mentioned have different roles and focuses. For instance, HHE is related to health hazard evaluations, NIOSH is primarily concerned with occupational health and safety research, and OSHA sets and enforces safety regulations in workplaces but does not develop voluntary product standards like ANSI does.