If a yellow alert is suppressed and later turns red, what must the student do?

• A. Ignore it; it's a routine event.
• B. Do nothing; wait for instruction
• C. Investigate again and treat as a new red alert
• D. Escalate to the supervisor

Answer: (C)

In safety alert systems, suppressing a yellow alert doesn’t eliminate the underlying risk. If that alert later escalates to red, you must treat it as a fresh red alert and re-do the safety assessment under the current conditions. This ensures you respond to the present risk, re-apply the appropriate controls, and follow the red-alert procedures for immediate action. Ignoring or delaying action would overlook the changed situation, so the correct approach is to investigate again and proceed as a new red alert.