Final answer:
Supremacy is the highest level of air control to which air forces can aspire.
Step-by-step explanation:
The highest level of air control to which air forces can aspire is supremacy. Air control is categorized as parity, superiority, or supremacy, with supremacy representing the highest level of influence in the air domain relative to that of an adversary. Supremacy occurs when one side has complete control over the airspace and is able to deny the enemy the use of the airspace.