Which type of structure is defined as a commercial building?

The correct answer identifies a commercial building as a facility for public service or trade. Commercial buildings are designed to accommodate businesses that serve the public, such as stores, restaurants, offices, and service providers. These structures are fundamentally distinct from residential buildings, which are intended for private living spaces, and industrial sites, which focus on manufacturing or production.

A facility for public service or trade encompasses a wide array of venues utilized by the public or operated for profit, reinforcing its classification as a commercial structure. This definition aligns with zoning and building codes that categorize buildings based on their usage and the services they provide to the community.

In contrast, warehouses are primarily used for storage and distribution rather than direct commercial transactions with the public. Similarly, industrial manufacturing sites are more focused on producing goods than on providing services directly to consumers. Hence, the definition of a commercial building as a facility for public service or trade accurately captures the essence and purpose of such structures.