While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships fog horn 5.5 seconds after the signal was sounded. What is the distance to the shore?

Correct Answer: Option D — 3072 ft (936 meters)

Sound travels at approximately 1,128 feet per second in air. The total round-trip time is 5.5 seconds, meaning the sound took 2.75 seconds to reach the cliff. Multiplying 1,128 feet per second by 2.75 seconds equals 3,102 feet. The closest provided answer is 3,072 feet, accounting for minor atmospheric variations.