Which color is associated with the status 'Dead line'?

• A. Black
• B. Red
• C. Green
• D. Blue

Answer: (B)

Dead line status uses red because red is the universal signal for danger, prohibition, and stopping. Seeing red immediately tells operators that a boundary or condition is hazardous and must not be crossed or used until the issue is resolved. Green would mean safe to proceed, blue is often informational or mandatory in some systems, and black isn’t a standard danger cue, so they don’t convey the urgent prohibition that a dead line represents.