Which of the following is NOT one of the four fundamental political challenges facing developing countries?

Which of the following is true about negative campaigning?

a. Negative campaigning is not new in American politics. b. Candidates do not use negative campaigning because it has proven unsuccessful. c. Negative campaigning is particularly effective when attacks go unanswered. d. Candidates who use negative campaigning last only one term in office. e. Negative campaigning is illegal.

Mexico's level of social development

a. is lowest along the US–Mexican border due to the exploitative employment practices of the maquilodoras. b. has a regional dimension with southern areas of the country being significantly better off than central and northern areas. c. is lower and distributed less well in comparison to many Latin American states. d. is lower due to the large numbers of people living in urban areas where they overwhelm Mexico's government programs. e. was relatively unaffected by the 1980s economic crisis.