D as there isn't a time limit
Answer:
living a healthy lifestyle such as eating healthy and excercising!
right?
<span>Of course, infectious disease seems like a terrible thing to be added to a water supply, and of course it is, but in reality this only occurs rarely in modernised societies. Diseases can spread rapidly from contaminated drinking supplies - water is the most vital sustaining chemical to human life after oxygen - and must be considered the most serious effect of water pollution.</span>
