Which event from the 20th century best illustrates Alexis de Tocqueville's assertion that populism was key to the United States' success as a
constitutional republic?

A. The 1966 Supreme Court case Miranda v. Arizona guaranteed that
those accused of a crime be informed of their right to an attorney.
B. Title IX was passed in 1972, guaranteeing gender equality in
public education funding.
C. The United States provided material support to Afghan rebels
fighting a Soviet invasion.
D. President Richard Nixon resigned the presidency when it became
clear he would be impeached for misconduct.