Which of the following best describes Combatant Command (Command Authority)?

The correct choice outlines the essence of Combatant Command (Command Authority) as it pertains to the role of a commander in the military context. This authority is fundamentally about the responsibility and power a commander holds over assigned forces, which includes the capability to organize, employ, and direct those forces in operational settings. Essentially, it encompasses a broad range of responsibilities that go beyond just overseeing units; it includes planning, executing missions, and ensuring that operations align with the strategic objectives set by higher authorities.

Combatant Command (Command Authority) gives the assigned commander full control to allocate resources, make tactical decisions, and coordinate with other military and civilian entities as required for effective mission accomplishment. Thus, the notion of organizing and employing commands is foundational to understanding how Combatant Command functions within the larger defense framework.