Final answer:
OSHA is responsible for approving personal protective equipment such as helmets, visors, and goggles for waterjetting operations to ensure worker safety. Therefore, the correct option is B. OSHA.
Step-by-step explanation:
The organization responsible for approving helmets, visors, and goggles for waterjetting operations is the Occupational Safety and Health Administration (OSHA). OSHA is the main federal agency charged with enforcing safety and health legislation. It is OSHA that regulates the safety standards for the equipment used in waterjetting operations.
OSHA has the authority to enact standards to protect workers from various workplace hazards, and this includes the proper certification of personal protective equipment used during such operations. This ensures that workers are using equipment that has been tested and meets specific safety criteria.