The aerial flares in the MK-79 signal kit can attain an altitude of _______ to _______ FT and remain illuminated for about ________ seconds.

The aerial flares in the MK-79 signal kit can attain an altitude of _______ to _______ FT and remain illuminated for about ________ seconds.

• A. 100 to 200 ft; 2.5 seconds
• B. 300 to 700 ft; 6 seconds
• C. 150 to 400 ft; 3.0 seconds
• D. 250 to 650 ft; 4.5 seconds

Answer: (D)

Aerial signaling flares are designed to be clearly visible from a distance while the light lasts long enough for rescuers to notice. The MK-79 flare is intended to rise to a mid-range height and burn for a short but sufficient moment. Being a few hundred feet up gives a good line of sight over waves without the flare drifting out of sight, and burning for about five seconds provides a bright, steady signal long enough for searchers to spot it. This pairing of a practical altitude with a short, reliable illumination time matches how the device is used in signaling for help. The other options either suggest heights that are too low or too high for reliable visibility or indicate burn times that would be too brief or unnecessarily long for a timely rescue signal.

Aerial signaling flares are designed to be clearly visible from a distance while the light lasts long enough for rescuers to notice. The MK-79 flare is intended to rise to a mid-range height and burn for a short but sufficient moment. Being a few hundred feet up gives a good line of sight over waves without the flare drifting out of sight, and burning for about five seconds provides a bright, steady signal long enough for searchers to spot it. This pairing of a practical altitude with a short, reliable illumination time matches how the device is used in signaling for help. The other options either suggest heights that are too low or too high for reliable visibility or indicate burn times that would be too brief or unnecessarily long for a timely rescue signal.