Question 1011Navigation General

The correct answer is D) 3072 ft (936 meters). The reasoning is based on the speed of sound in air, which is approximately 1100 feet per second (or 335 meters per second). Since the echo of the ship's fog horn was heard 5.5 seconds after the signal was sounded, the distance to the shore can be calculated by multiplying the speed of sound (1100 feet per second) by half the time elapsed (5.5 seconds divided by 2), which gives a distance of 3072 feet (936 meters). The other options are incorrect because they do not accurately reflect the distance based on the time elapsed and the speed of sound in air.