What led to the political realignment during the Great Depression?

Many Black voters switched to the Democratic party after Roosevelt passed an anti-lynching law.
The New Deal, with its liberal ideas and newly powered labor unions, contributed to Democrats holding office for nine presidential terms.
Immigrants in urban areas voted Democrat due to Democratic political machines and the economic devastation on cities.
Demographic shifts from the Midwest by farmers residing in the Dust Bowl contributed to their support of the Republican party.
Many white supremacist voters disagreed with Roosevelt’s New Deal and switched to the Republican party.

After all there is an element in the readjustment of our financial system more important than currency, more important than gold, and that is the confidence of the people. Confidence and courage are the essentials of success in carrying out our plan. You people must have faith; you must not be stampeded by rumors or guesses. Let us unite in banishing fear. We have provided the machinery to restore our financial system; it is up to you to support and make it work.

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The statement that led to the political realignment during the Great Depression is "Immigrants in urban areas voted Democrat due to Democratic political machines and the economic devastation on cities."

This is evident in that during this period, immigrants were migrating into the United States, living in the cities, and were being helped by the political machines.

The political realignment during the Great Depression occurred around the 1930s.

Option A is wrong because Franklin Roosevelt did not pass the anti-lynching law.

Option B is wrong because Democrats did not hold office for nine presidential terms but rather seven terms between 1932 to 1968 (Republicans used two terms between 1952 to 1960).

Option D is wrong because it was the Democratic party that gained from the political realignments of this period. Also, farmers supported the Democratic party, not the Republicans.

Option E is wrong because white supremacist voters from the South region supported Franklin Roosevelt and voted for him.

Hence, in this case, it is concluded that the correct answer is option C.

Explanation: