A Hazard Communication program requires that all what at the worksite be fully evaluated for possible physical or health hazards?

The correct choice is focused on the necessity for evaluating chemicals present at the worksite as part of a Hazard Communication program. This program is designed to ensure that all employees are aware of the chemical hazards they might encounter while performing their jobs. Chemicals can pose various physical or health risks, such as toxicity, flammability, or reactivity, which need to be clearly communicated to workers through labels, safety data sheets, and training.

By evaluating chemicals for potential hazards, employers can implement appropriate safety measures and provide adequate training to employees, ultimately reducing the risk of accidents and health issues related to exposure. Communicating information about these hazards is a key component in fostering a safe working environment, ensuring that everyone is informed and able to take the necessary precautions.

The evaluation process helps in identifying not only the dangers associated with specific chemicals but also the protective measures that should be put in place, such as Personal Protective Equipment (PPE) or emergency procedures.