What action is indicated for aircraft in flight that see a steady red signal?

A steady red signal is an indication from air traffic control that aircraft in flight should give way to other aircraft. This signal is essential for maintaining safety and situational awareness in busy airspace. The steady red light indicates that there is a situation requiring caution, often signaling to pilots that they should be ready to yield or maintain a safe distance from other aircraft.

The other choices do not align with the action required by the steady red signal. Ascending to a higher altitude, adjusting course slightly, or heading toward the nearest airport might be appropriate actions in different circumstances, but they do not address the specific directive presented by a steady red signal from air traffic control. In busy airspace, prioritizing yield to other aircraft ensures safe separation and reduces the risk of mid-air collisions.