Which group is characterized by offices and professional services?

The correct choice is Group B, which is defined as "business." This classification includes establishments that primarily engage in office and professional services. The activities typical of Group B consist of the operation of offices, the provision of professional services, and the management of businesses. This group is typically characterized by low to moderate occupancy levels and is designed to accommodate activities where the main purpose is to facilitate office work, such as administrative duties or consulting services.

In contrast, other groups have specific characteristics that do not pertain to offices or professional services. For instance, Group A focuses on assembly uses, primarily involving gatherings of people for purposes such as entertainment or education. Group D pertains primarily to storage uses, involving the storage of goods in a space that does not support significant occupancy. Group F is designated for factory uses, where manufacturing processes occur, often involving heavy machinery and workforce assembly. Hence, Group B is the distinct category that best represents the nature of office and professional services.