Who must be allowed to observe pre-entry testing?

The correct response highlights the importance of safety protocols when entering potentially hazardous spaces. Allowing the employee who is about to enter the confined or potentially dangerous area to observe pre-entry testing is crucial. This practice ensures that they understand the conditions and risks associated with the space they are about to enter. It also empowers the employee with knowledge about safety measures that have been put in place or any hazards that have been identified before their entry.

This not only reinforces a culture of safety within the workplace but also enables the employee to make informed decisions about their safety. When they observe the testing process, they can gauge the environment's readiness for safe entry and ensure that their own safety measures are adequate. This process of inclusion helps to promote awareness and accountability regarding safety practices.

In contrast, the other choices do not provide the same level of relevance or responsibility regarding safety. For instance, employers and safety inspectors may conduct or oversee the pre-entry testing, but it is essential that the individual entering the space is directly involved in understanding the outcomes of these tests. This direct involvement helps reinforce their personal responsibility for safety in addition to compliance with regulations.