So I see at least three answers here that could potentially be correct, however I believe the best possible answer would be D. they distribute heat around the planet and are a major factor influencing the climate around the globe.
(The other two possibly correct answers would be A. and B. Animals such as Sea turtles will use the ocean currents as a means of quicker transportation and navigation. Sailors would also use the currents as a means of quicker transportation and navigation, however that is not required today with modern technological advances.)<span />
