The pollution problem caused by the burial of industrial waste is most prominent in the moderately developed countries, while it is not prominent in the developed and underdeveloped countries. Underdeveloped countries are because there is not much industrial waste that can be processed. Developed countries are either because they have effectively reduced industrial waste, or because they have effectively processed industrial waste. Country H is a moderately developed country. 
Country H will not regress to underdevelopment after five years.
 the pollution caused by the burial of industrial waste will be substantially changed in five years.