The task of economic policy is to create a prosperous America. The unfinished task of prosperous Americans is to build a Great Society. Our accomplishments have been many; these tasks remain unfinished: > to achieve full employment without inflation; > to restore external equilibrium and defend the dollar; > to enhance the efficiency and flexibility of our private and public economies; > to widen the benefits of prosperity; > to improve the quality of American life -Lyndon B. Johnson The speech implies that America's prosperity

a)is threatened
b)is at its peak
c)must be retained
d)must be broadened
threatened Johnson's war against poverty

The speech implies that America's prosperity must be retained and broadened. This can be inferred from the statement "Our accomplishments have been many; these tasks remain unfinished" and the list of unfinished tasks mentioned in the speech, such as achieving full employment without inflation, restoring external equilibrium, enhancing the efficiency and flexibility of the private and public economies, widening the benefits of prosperity, and improving the quality of American life. These tasks indicate that there is still work to be done to maintain and expand America's prosperity. Additionally, mentioning Johnson's war against poverty suggests that prosperity needs to be broadened to include all members of society. Therefore, the correct answer is both c) must be retained and d) must be broadened.