In CRM, monitoring and crosschecking involves which of the following actions?

• A. Passive observation without verification.
• B. Only monitor the other crew members but not passengers.
• C. Wait for an abnormal event before acting.
• D. Actively monitor cabin and passengers, verify crew actions, and resolve inconsistencies.

Answer: (D)

Monitoring and crosschecking means keeping constant awareness of the whole cabin environment and continuously validating what each crew member is doing, then addressing any mismatches between intended actions and what is actually happening. The best answer captures this proactive, collaborative safety approach by describing active monitoring of both the cabin and the passengers, verifying crew actions, and resolving inconsistencies as they arise. This reflects the core CRM practice of maintaining situational awareness, clear communication, and diligent follow-through to prevent small issues from becoming safety problems. The other options miss this proactive verification and coordination: passive observation without verification leaves safety gaps, focusing only on crew while ignoring passengers neglects critical cues, and waiting for an abnormal event is reactive rather than preventing issues through early crosschecking.