Question

a basement parking structure requires additional smoke control measures. what regulation justifies this?
fire code allows natural vents in place of mechanical systems in all basements.
the fire code addresses basement ventilation and smoke management to prevent entrapment.
the fire code does not regulate mechanical ventilation in enclosed spaces.
the fire code requires openable windows in all below - grade levels for egress.

Explanation:

The question is about smoke - control regulations for a basement parking structure. The Fire Code focuses on ventilation and smoke management to avoid entrapment in such structures, which justifies additional smoke - control measures. The other options are either incorrect (e.g., Fire Code does regulate mechanical ventilation in enclosed spaces in some cases) or not directly related to smoke control in the context of the question.

Answer:

The Fire Code addresses basement ventilation and smoke management to prevent entrapment.