According to Kirk Smith,a Professor of Environmental Health at the University

According to Kirk Smith,a professor of environmental health at the University of California,Berkeley,indoor fires increase risks of pneumonia,tuberculosis,lung cancer,and low birth weight in babies born of women exposed during pregnancy.What simple solution is being widely promoted to reduce this risk of death?

A) preparing meals using solar cookers
B) switching from wood to burning crop waste as a fuel source
C) adding more windows to houses as a source of ventilation
D) passing a green tax to make homeowners pay for their pollution
E) providing asthma inhalers to children under the age of 12 years