This text is mainly about how
A seawater cannot be made drinkable and usable.
B water is treated to make it usable and how it is stored.
C companies plan to improve drinking water.
D water systems are failing and need to be repaired.
How water is treated to make it usable and how it is stored
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The correct answer is B water is treated to make it usable and how it is stored.
Explanation: The text focuses on the processes involved in treating water to make it safe for consumption and the methods used for its storage. This indicates an emphasis on the treatment and usability of water, rather than the other options which are more restrictive or focused on specific issues or companies.