Which supervisory level is used to divide the incident geographically?

The correct choice is divisions, as this supervisory level is specifically designed to organize and manage resources on the incident scene based on geographic areas. Divisions are established when it is necessary to span the incident area, allowing each division to focus on a particular sector of the scene. This geographical categorization aids in maintaining effective command and control over large incidents, ensuring that operations are coordinated within specific areas.

In contrast, sections typically represent broader organizational roles that encompass multiple divisions or units and manage overall incident operations, logistics, and planning, rather than focusing purely on geographic separation. Groups are utilized to bring together resources for specific tasks, often regardless of their geographical location, while units represent the smallest level of organization and are used for specific functions or tasks, rather than delineating areas of operations.