Final answer:
Mycobacterium tuberculosis requires BSL-III, a containment level for agents posing moderate to high risk, with special laboratory features and protective measures.
Step-by-step explanation:
The biosafety level (BSL) for Mycobacterium tuberculosis is BSL-III. This level is appropriate for research with microbes or infectious agents that pose a moderate to high risk to laboratory workers and the community. These pathogens could potentially cause lethal infections via inhalation and often require specific facilities with restricted access, medical surveillance of laboratory workers, and additional personal protective equipment (PPE), such as respirators. Laboratories must have specialized features like hands-free sinks, eyewash stations, self-closing and locking doors, and directional airflow which ensures that the clean air flows from less contaminated areas to more contaminated areas, without recirculation.