Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon? A. Water is an acid B. Water is a universal solvent C. Water acts as a buffer D. Water has a high heat capacity

The temperature difference and the amount of heat are in direct relationship. Another factor that may affect them is their heat capacity which is constant at a specific range of temperature. For salt water the value is approximately equal to 1 cal/g°C which is quite high compared to other substances. Thus, the answer to the question above is letter D.