Answer:
Incorrect statement is -
d.The largest reservoir of Earth’s available freshwater is aquifer .
Explanation:
The guarani aquifer that is located in Argentina , Brazil . Uruguay and Paraguay is second largest known aquifer system in the world and is an important source of fresh water.
Ocean and inland seas are the largest reservoir of water on earth .97.2% of all the water on the planet earth is salty water .Only 2.8% of all the water on planet is fresh water and three quarter of all the fresh water on Earth is in the frozen form , in glaciers .