The correct statement about the global ocean conveyor belt is:
B) It reduces temperature fluctuations between seasons in Europe.
The global ocean conveyor belt, or thermohaline circulation, plays a crucial role in regulating the Earth's climate by redistributing heat across the planet. One of its significant impacts is the moderation of temperatures in Europe, primarily due to the Warm Gulf Stream, which helps keep the region warmer than it would be otherwise. The other statements either misrepresent the function of the conveyor belt or relate to concepts outside its primary influence.