Which Reservoir Holds the Largest Volume of Earth's Freshwater

Question

Which reservoir holds the largest volume of Earth's freshwater?  
A) Groundwater
B) Rivers
C) Lakes
D) Atmosphere
E) Polar ice

Accepted Answer

Polar ice caps and glaciers hold the largest volume of Earth's freshwater, accounting for approximately 68.7% of the total. Groundwater is the second largest reservoir.