Which of the following best describes the relationship between developing nations, clean water, and human health?
A. Many developing nations lack access to clean water; this can harm human health.
B. Clean water is never available in developing nations, so human health is always a major issue
there.
C. Human health does not depend on clean water; health issues in developing nations are not related
to water.
D. Contaminated water and human health is not a problem in developing nations, but it is a problem
in developed nations