The MK-124 day/night pyrotechnic device produces________ colored smoke for daytime conditions and ___________ colored flare as a night signal.

The MK-124 day/night pyrotechnic device produces________ colored smoke for daytime conditions and ___________ colored flare as a night signal.

• A. Blue smoke and blue flare
• B. Orange smoke and red flare
• C. Green smoke and yellow flare
• D. Orange smoke and green flare

Answer: (B)

Daytime and nighttime signaling rely on bold color cues that stand out in different lighting. The MK-124 is designed to provide a daytime signal with orange smoke, which is highly visible against the sea and sky, and a nighttime signal with a red flare, whose bright glow is easy to spot in darkness. That combination—orange smoke by day and red flare at night—explains why it’s the best choice here. Other color pairings don’t match the standard signaling colors used by this device and wouldn’t be as visible in their respective conditions.

Daytime and nighttime signaling rely on bold color cues that stand out in different lighting. The MK-124 is designed to provide a daytime signal with orange smoke, which is highly visible against the sea and sky, and a nighttime signal with a red flare, whose bright glow is easy to spot in darkness. That combination—orange smoke by day and red flare at night—explains why it’s the best choice here. Other color pairings don’t match the standard signaling colors used by this device and wouldn’t be as visible in their respective conditions.