Richard Easterlin (1968, 1987) maintains that the 20th century’s patte

Richard Easterlin (1968, 1987) maintains that the 20th century’s pattern of births was

(a) affected primarily by Real Gross National Product (Real GNP).
(b) negatively affected by the U.S. population’s materialistic desires and
positively affected by its income.
(c) explained by waves of discrimination.
(d) explained solely by the wars.

ANSWER

(b)