Refer to the figure below. In response to gradually falling inflation, this economy will eventually move from its short-run equilibrium to its long-run equilibrium. Graphically, this would be seen as 

All the factors below are causes of diminishing marginal returns, except

a. Difficulty of monitoring and motivating larger workforces b. Increasing complexity of larger systems c. Division of Labor d. The "fixity' of some factor

Which of the following actions did Congress NOT take in the 1930s, in an effort to prevent future financial crises like the stock market crash of 1929?

A. Glass-Steagall Banking Act B. Formation of the SEC C. Formation of the FDIC D. Federal Reserve Act