Ocean currents transfer about __% of the global heat budget.

• A. 10%
• B. 15%
• C. 25%
• D. 35%

Answer: (C)

The main idea is how the ocean redistributes heat around the globe. Ocean currents move large amounts of heat from the tropics toward higher latitudes, helping to balance the Earth's energy budget. This poleward transport by the oceans accounts for about a quarter of the global heat redistribution, roughly 25%. That figure captures the ocean’s major role in moderating climates—for example, warming some temperate regions that would otherwise be cooler—while the atmosphere handles a substantial portion as well. Among the given options, 25% fits widely cited estimates and reflects the ocean’s significant, but not overwhelming, share of heat transport. Values like 10% or 15% underestimate the ocean’s influence, and 35% overstates it.