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Choose the phrase from the text that best supports the idea that engineers design water systems to work even if a water main breaks.
A. coagulants are mixed into the water
B. looped together in a grid pattern
C. hold up under the pressure caused by soil
D. cold water is pumped through coils
The correct answer is B. looped together in a grid pattern.
This phrase suggests that the water systems are interconnected in a way that ensures if one part fails (like a water main breaking), the other parts can still function, maintaining water flow. This design is crucial for reliability and service continuity in case of emergencies. If you have any more questions or need further assistance, feel free to ask!