Answer:
B. Clean water access
Step-by-step explanation:
In the countries with comparatively lower income , tends to struggle from a lot of health issues and on the major cause of this problem is limited amount of clean water .
According to the reports , 3.4 million people die every year due to water related issues.
There are lot of problem which are associated with dirty water .
These waterborne diseases are Dysentery, Typhoid , Guinea worm disease and Cholera.
Hence , from the given statement of the question,
The correct option is B. Clean water access .