Which option indicates the correct condition to discontinue service due to safety concerns?

• A. In turbulent weather only
• B. When the seatbelt sign is on
• C. At the captain's discretion
• D. When turbulence is anticipated or seatbelt sign is on

Answer: (D)

The main idea here is safety triggers for pausing in-flight service. Service should be discontinued whenever there is a real risk to passengers or crew, which includes turbulence that is anticipated as well as when the seatbelt sign is illuminated. Stopping service in those situations helps prevent items from becoming hazards, keeps people seated and belted, and reduces the chance of injuries from movement or spills.

Why this option is best: it covers both conditions that reliably signal risk—either upcoming rough air or a formal cue to remain seated. The other choices are incomplete: focusing only on turbulence misses the anticipatory risks, while focusing only on the seatbelt sign misses situations where turbulence is expected but not yet severe. Relying solely on someone’s discretion can lead to inconsistency, so having a clear, combined trigger is the safest approach.