Which section is responsible for communications?

The correct choice pertains to the role typically associated with communications within a military structure. Specifically, the G-6 section is responsible for managing communications and information systems. This includes overseeing all aspects of telecommunications, computer networks, and information systems operations. The G-6 ensures that reliable and secure communications are maintained to support operational readiness and effective command and control.

The other sections have different focuses: G-1 deals with personnel administration and management, G-2 focuses on intelligence and operational security, and G-5 is involved in planning and future operations. Thus, each section has its own specific responsibilities, but G-6 is clearly designated for communication functions, making it the accurate answer in this context.