Question 753Navigation General

The correct answer is D) 730 yards. The reasoning is as follows: The time it takes for the sound of the ship's fog horn to travel to the shore and reflect back is 4 seconds. Sound travels at approximately 1,100 feet per second in air. Therefore, the total distance the sound travels is 1,100 feet x 4 seconds = 4,400 feet. Since the sound travels to the shore and back, the distance to the shore is half of the total distance, which is 4,400 feet / 2 = 2,200 feet, or 730 yards. The other answer choices are incorrect because they do not accurately calculate the distance based on the given time delay of the echo.