Which type of containment involves both technology and a manual approach?

The concept of containment in fire safety encompasses various methods to prevent the spread of fire and smoke within a building. Active containment typically involves technological systems like sprinklers and fire alarms that activate during a fire. Passive containment, on the other hand, includes features such as firewalls and fire-resistant doors, which are designed to contain the fire without requiring any activation.

The correct answer, which reflects that both technology and a manual approach are utilized, aligns closely with the definition of active containment. Active systems require human intervention in terms of maintenance and operation, alongside their automated response capabilities. Passive systems, while more static, also involve manual preparations, such as regular inspections and ensuring that the barriers are intact.

All of the above options contain elements related to containment strategies, but the focus on a combination of technology and manual approaches is most appropriate to characterize the dual nature of active containment. This combination is crucial for effective fire safety management, as it relies on both the reliability of technology and the diligence of human oversight.