Ground Control must ensure stripmarking is completed for instructions or ___ issued or received.

• A. Coordination
• B. Clearances
• C. Messages
• D. Authorization

Answer: (B)

In ATC, the flight strip is the record that shows what instructions or permissions a controller has issued and what has been received, ensuring everyone has a consistent, auditable view of the actions to be taken. Completing stripmarking for instructions or clearances issued or received ensures there’s a clear, up-to-date record of the formal permissions governing the aircraft’s actions. A clearance is the formal authorization that allows an aircraft to proceed with a specific action (like taxiing, takeoff, or entering a particular area), so it must be captured on the strip along with other instructions. Other terms are less precise in this context: coordination refers to process interaction, messages are general communications, and authorization is too broad—the standard term used for the formal permission tracked on the strip is clearances.