Which of the following was a key principle outlined in Roosevelt’s New Deal?

The key principle outlined in Roosevelt’s New Deal was increased government regulation of the economy. During the Great Depression, the United States faced unprecedented economic challenges, and the New Deal was designed to provide relief, recovery, and reform. This involved a significant expansion of the federal government's role in regulating various sectors of the economy to stabilize financial markets, promote employment, and ensure the wellbeing of American citizens.

Through initiatives such as the Securities Exchange Act, the Federal Deposit Insurance Corporation (FDIC), and the National Industrial Recovery Act, the New Deal established mechanisms for government oversight and intervention to rectify imbalances and prevent future economic crises. These regulations aimed to provide some security to the banking system, create fair competition among businesses, and protect workers' rights. This shift towards a more regulated economic environment marked a significant transformation in the relationship between the federal government and the economy.

In contrast, the other options do not align with the core objectives of the New Deal. Monetary expansion refers to increasing the money supply, which was not a primary focus of the New Deal. Reduced federal government intervention contradicts the essence of the New Deal, which sought to involve the government more actively in the economy. Environmental conservation, while important, was not a predominant principle of Roosevelt's New Deal