In what situation would an infantry squad employ bounding overwatch?

Bounding overwatch is a tactical movement technique that is specifically employed when maneuvering through an area with potential enemy contact. This method enables units to move safely by allowing one element to advance while another provides cover, or "overwatch." The key characteristic of this scenario is the presence of a threat, prompting infantry squads to remain vigilant, maintain communication, and transition systematically to ensure their safety while moving toward their objective.

In environments where enemy forces may be active or positioned, using bounding overwatch helps to mitigate the risk of ambushes and enhances the squad's situational awareness. As the unit progresses, the unit in overwatch can scan for signs of enemy positions, gather intelligence, and control the engagement pace, thereby facilitating a coordinated and safe advancement.

In contrast, establishing a defensive perimeter focuses on securing an area rather than maneuvering through potentially hostile territory. Urban warfare might involve other tactics considering the complexity of the environment, while conducting reconnaissance patrols often requires a more stealthy approach that does not necessarily align with the more overt movements seen in bounding overwatch. Thus, option B is the most fitting choice for the question posed.