The correct answers are B) economic development and C) enforcement.
The factors that hindered environmental protection efforts in Eastern Europe were economic development and enforcement.
Air pollution, water consumption and soil degradation are two of the most important environmental issues that affect Eastern Europe. The European Environment Agency (EEA) has made some efforts in order to protect vulnerable groups such as children, the elderly, and the poor in Eastern Europe. but economic problems and lack of enforcement in those countries limit the implementation of programs.