Answer:
The answer is D.
Explanation:
Only 11% of freshwater is in swamps, so option A is incorrect.
The groundwater on earth appears to be a fraction of the freshwater, so option B is incorrect.
We can see that only 3% of the Earth's water is freshwater, so option C is incorrect.
68.7% of Earth's freshwater is found in icecaps and glaciers, meaning it is the majority of Earth's freshwater. Therefore, option D is correct.
