Final answer:
Access to improved water, sanitation, and hygiene could prevent 50% of deaths from diarrhea among children under the age of 5.
Step-by-step explanation:
According to the most recent estimates of the global burden of disease, access to improved water, sanitation, and hygiene could prevent 50% of deaths from diarrhea among children under the age of 5. Each year contaminated water and poor sanitation contribute to 5.4 billion cases of diarrhea worldwide and 1.6 million deaths, mostly among children under the age of five. Improving water safety, sanitation, and hygiene globally has the potential to prevent up to 9% of all diseases and 6% of all deaths.