19. Bohemia and Moravia face which of the following challenges? (a)They each have large ethnic minorities who are pressuring them to break away from the Czech Republic.
(b)They are heavily polluted areas that need to modernize their industries and clean up the quality of the air and water.
(c) Since privatization, small family farms are being put out of business by large, corporate-owned farms.
(d) It has been difficult for them to achieve economic stability since becoming independent nations.