Critical Reasoning (CR) | Snowmaking machines work by spraying a mist that freezes

"C" is the correct choice - QuickFreeze plans to market wastewater purification systems that works by spraying a mist that freezes on contact with cold air. The sudden freezing kills bacteria. Because the system works only at cold temperatures, municipalities using it will still need to maintain a conventional system.

Prethinking: Municipalities would want to kill bacteria in summers as well as winters. If they invest in Quickfreeze, knowingly that they will be required to maintain conventional
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