Why Did Progressivism Eventually Fade Around 1916

Why did progressivism eventually fade around 1916?

A) The conflicts of the Great War rose to the forefront of American concerns, surpassing domestic issues.
B) Progressivism had accomplished all of its major goals, such as measures addressing child labor.
C) Progressivism had led to the widespread implementation of traditional laissez-faire economics that decreased the role of the government.
D) The principle that federal, state, and local governments had the responsibility of protecting Americans from corrupt politicians had not yet been established.
E) Progressivism had reached its peak during Roosevelt's presidency, and in the years that followed, people were far more worried about the economy.