Which prevention action is likely to have the greatest effect on reducing the death rate in less developed countries?

Question

Quizplus · Accepted Answer

Clean water is a basic necessity for survival and is critical in preventing many water-borne diseases such as cholera and dysentery, which are major causes of death in less developed countries. Improving access to clean water can have a significant impact on reducing the death rate in these countries. While other prevention actions listed can also contribute to better health outcomes, they may not have as immediate and substantial effects as access to clean water.

Which Prevention Action Is Likely to Have the Greatest Effect