Which of the following are the five domains?

The five domains of warfare are defined as Land, Maritime, Air, Cyberspace, and Space. This classification reflects the contemporary operational environment where military operations can occur across various platforms and settings.

Land, Maritime, and Air have long been recognized as traditional domains in which forces engage and conduct operations. In recent years, Cyberspace has emerged as a critical domain due to the increasing reliance on digital technologies and the vast potential for cyber operations to impact military effectiveness. Additionally, Space is acknowledged as a strategic domain that involves satellite communications, reconnaissance, and navigation, which are essential for modern warfare operations.

This answer aligns with the current military doctrine that emphasizes the importance of these five domains in developing comprehensive approaches to national defense and operational planning. The other options incorporate variations or terms that do not reflect the standard five domains recognized in military discussions and doctrine.