You Visit a Small Village During a Trip to Haiti

You visit a small village during a trip to Haiti.While there,you learn that a large number of villagers suffer from respiratory problems.Which of the following is the best explanation for this phenomenon?

A) The villagers are allergic to your body spray.
B) The villagers are exposed to a great deal of air pollution from urban traffic.
C) Many of the villagers have had malaria,and lung damage is a permanent effect of the disease.
D) The villagers are exposed to a great deal of air pollution from fuels used for cooking.