Which type of barrier is specifically intended to restrict the movement of smoke?

The correct choice focuses on a smoke barrier, which is specifically designed to restrict the movement of smoke in a building. Smoke barriers are critical components in fire protection systems, as they help to contain smoke and prevent it from spreading to other areas, thereby improving the safety of occupants during a fire incident.

Smoke barriers typically consist of walls or partitions that are constructed to certain standards that resist smoke movement. They are strategically placed to create smoke zones, which help to manage and control the flow of smoke, allowing for safer evacuation routes and more efficient firefighting efforts.

On the other hand, firewalls, fire barriers, and fire partitions serve different but related purposes in fire safety. Firewalls are constructed to withstand fire for a longer duration and can also serve to divide buildings structurally. Fire barriers are intended to prevent the passage of flame and heat, while fire partitions are generally used to separate spaces within the same building and can assist in controlling smoke to some extent but are not exclusively intended for that purpose.