Science Literacy Look at This Breakdown of the Environmental Connection

Multiple Choice

Science Literacy Look at this breakdown of the environmental connection to some of the most serious human health problems and answer the questions that follow.
-Malaria,dengue,and Japanese encephalitis are all transmitted by a mosquito vector.Which action below would be most helpful in reducing the incidence of this disease?

A) providing more nutritious food for potential victims
B) providing better sanitation
C) purifying drinking water or provide filters
D) reducing standing water in the area