Which occupancy group is defined for assembly areas with fixed seating?

The correct choice for assembly areas with fixed seating is A-1. This occupancy group encompasses areas designed primarily for the performance of arts, such as theaters, concert halls, or arenas where the audience remains seated. The key characteristic of an A-1 assembly occupancy is that it includes fixed seats designed for spectator use.

In contrast, other assembly groups, such as A-2, A-3, and A-5, cater to different types of gatherings or activities. For instance, A-2 may include banquet facilities and nightclubs, A-3 focuses on assembly uses without fixed seating (like gymnasiums or places of worship), and A-5 is related to outdoor activities like amusement parks or spectator sports in open areas. Understanding the distinctions among these occupancy classifications is crucial for determining code requirements and safety measures for various assembly environments.