社區健康護理師評估了一場因市鎮水庫受到嚴重污染而引發的急性腸胃炎大爆發。下列哪項明確行動不容置疑地構成了一種典範的「初段預防 (Primary prevention)」策略？

A community health nurse evaluates a massive outbreak of acute gastroenteritis traced precisely to a heavily contaminated municipal water reservoir. Which explicit action undeniably constitutes an exemplary primary prevention strategy effectively neutralizing the core community threat?

• ARunning extensive, rapid diagnostic stool culture screenings continuously effectively on every single town resident systematically.
  系統性地對每位鎮上居民持續進行廣泛且快速的糞便培養篩檢。
• BDisseminating a unified fierce public alert mandating all residents strictly solidly boil their tap water heavily before consumption.✓ 正解
  發布統一且嚴格的公眾警報，強制所有居民在飲用前務必徹底煮沸自來水。
• CDistributing immense quantities of oral rehydration salt packets efficiently directly to already acutely infected symptomatic families.
  直接向已急性感染且有症狀的家庭分發大量口服補鹽包。
• DCoordinating complex long-term physical rehabilitation flawlessly for the elderly clients severely disabled by the extreme dehydration.
  為因嚴重脫水而重度殘疾的老年病人協調複雜的長期身體復健。