Which of the following statements about happiness as a measure in political-economic systems is accurate?
a. In the United States, relative income is likely to be a better predictor of happiness than standard of living.
b. High levels of happiness in postcommunist countries demonstrate the effect of culture on happiness.
c. Standard of living is the highest predictor of happiness in most western European countries.
d. The twenty unhappiest countries in the world contain a mix of very poor and very rich states.
e. Latin American countries' very low levels of happiness correlate with very low per capita income.