Unfortunately,plans to Involve Indigenous Peoples in Programs of Economic Development

Unfortunately,plans to involve indigenous peoples in programs of economic development have failed for all of the following reasons except:

A) incidence of disease tends to rise in areas facing rapid culture change.
B) environmental degradation caused by commercial development is high in these areas.
C) the tremendous influx of tourists into these areas has caused rapid contagion.
D) many of the more modern lifestyles that people adopt bring more diseases to these areas.
E) health problems are aggravated by rapid urbanization.