The majority of Earth's freshwater is in rivers and lakes and available for our use. This is the correct answer because rivers and lakes hold a significant portion of the planet's accessible freshwater that can be used for various purposes such as drinking, irrigation, and industrial needs.
While it is true that a large amount of freshwater is frozen in glaciers and ice caps, making it unavailable for immediate use, the freshwater in rivers and lakes is more accessible and can be easily treated for consumption.
It's important to understand the distribution of Earth's freshwater to appreciate the availability and usability of this vital resource. By recognizing the significance of freshwater in rivers and lakes, we can better appreciate the importance of conserving and managing water sources for sustainable use.