(b) In 1993, there were 16.5 million deaths due to infectious diseases worldwide. Globally, about 51 million people of all ages died in 1993, about three-quarters of them being adults. Some 39 million deaths took place in the developing countries and about 12 million in the developed countries. Poor countries had three times more deaths than the rich ones. The process of development itself appears to contribute to the spread of diseases. Unplanned urbanisation and the resulting deterioration in basic services have increased respiratory and gastrointestinal infections in the urban areas. Rural areas were also in high influence of infectious diseases. Therefore both the options are true but reason is not the correct explanation of the assertion.