What was President Franklin D. Roosevelt's greatest contribution while the nation recovered from an economic disaster and faced another potential war in Europe

his firm and confident leadership

Explanation:

Franklin Delano Roosevelt was one of the greatest statesman and leader of the United States of America. He served as America's 32nd President. He was the only President of America who served more than 2 terms.

Roosevelt became the President of America in the year 1933 and remained in the seat till 1945.

After the great depression, Franklin Roosevelt helped the people of US to regained faith in themselves. He gave hope to the people and promised vigorous and prompt action. In his inaugural speech he addressed to the people by saying that fear is the only thing to fear.

He proved to be the confident leader to served America as President. He implemented a number of innovative policies. Thus his firm and confident leadership was the greatest contribution to the people of America while America recovered from an economic disaster.

the answer is c, all the other options are things they are known for.

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