What action must the receiver take if they cannot confirm 1,000 feet of separation from the tanker before crossing the IP?

The correct choice is to hold at the ARIP (Aerial Refueling Initial Point) if the receiver cannot confirm 1,000 feet of vertical separation from the tanker before crossing the Initial Point. This action is crucial for maintaining safety and avoiding the risk of a collision during the aerial refueling operation.

Holding at the ARIP allows the receiver aircraft to wait safely at a predetermined position while ensuring that the required vertical separation from the tanker is established prior to proceeding with the refueling process. This practice ensures compliance with standard procedural requirements and enhances overall situational awareness in the airspace.

In the context of aerial refueling operations, ample vertical separation is essential for maintaining safety and operational integrity. By holding at the ARIP, the receiver can reassess their situation, communicate effectively with the tanker, and safely manage the operation until they can confirm the necessary separation.