Which of the following situations is most likely to arise when a crowded city is unable to provide its residents with sufficient sanitation?

Insufficient sanitation can allow human waste and contaminated water to spread disease, especially in a crowded city where people live close together. As a result, residents are more likely to suffer from preventable diseases. Better housing tenure, lower crime rates, and increased walking or biking do not follow directly from poor sanitation.

AI-written and checked against the verified answer.