Which conclusion is supported by the American public's shifting opinions
about the Panama Canal over the course of the 20th century?
O
A. Even a period of only a few decades can greatly change the
historical context surrounding an event.
O
B. Historians cannot determine an event's true historical context until
years after it is no longer relevant.
C. People's points of view are unlikely to shift greatly unless their
biases are first removed.
O
D. While people may change their political opinions, they rarely
change their significant points of view.