Which of the following best describes the purpose of CEMA?

The purpose of CEMA, which stands for Cyberspace Electromagnetic Activities, is best described by its role in projecting power in and through cyberspace and the Electromagnetic Spectrum (EMS). CEMA combines operations in cyberspace with electromagnetic operations to gain advantage over adversaries. This involves not just defending one's own cyber and electromagnetic capabilities, but also actively using them to disrupt or degrade the enemy’s capabilities, ensuring information dominance and operational effectiveness in modern warfare.

This approach is vital in contemporary military strategy, where the integration of cyber and electromagnetic activities can influence the outcome of conflicts and operations significantly. By effectively employing CEMA, military forces can enhance their operational strategy, ensuring they remain competitive and can respond to threats in both physical and digital realms. The other options do not accurately capture the strategic military role of CEMA, which is focused more on power projection and operational capability rather than routine support, troop morale, or personnel management.