Which command is responsible for preparing assigned forces for air combat in a theater of operations?

The correct answer is the command that specifically focuses on preparing forces for air combat operations. Air Combat Command (ACC) is designed to provide the United States with combat-ready forces and plays a crucial role in organizing, training, and equipping air combat units. ACC is responsible for providing the airpower needed for theater operations, ensuring that both the tactical and strategic air forces are primed for combat across various scenarios.

Understanding the functions of the other commands can provide additional context. Air Mobility Command, for example, is primarily focused on the rapid global air mobility of forces and supplies, which is critical in supporting operations but does not directly prepare forces for air combat. Global Strike Command concentrates on delivering nuclear and conventional strike capabilities, emphasizing deterrence and offensive operations rather than direct air combat engagements. Space Command, which oversees space operations, ensures that space capabilities support air and ground forces but isn't specifically tasked with air combat preparation. This distinction highlights why Air Combat Command is the most appropriate answer in this context.