Question 951Navigation General

The correct answer is D) 4.5 times its speed in air. The speed of sound in water is approximately 4.5 times faster than the speed of sound in air. This is due to the higher density and rigidity of water compared to air, which allows sound waves to propagate more efficiently through the aquatic medium. The other options are incorrect because the speed of sound in water is not 1.5, 2.5, or 3.5 times faster than in air. The actual ratio is approximately 4.5 times faster, as stated in the correct answer.