Which of the following will not cause the supply of labor curve to shift in the economics professor industry?

Question

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A decrease in the wage rate for Ph.D. economists in the banking industry (A), a decrease in the number of courses a professor must teach (B), and requiring professors to spend more time in their offices (D) all directly affect the supply of labor by changing the attractiveness of the position or the conditions of employment. However, universities discovering a way to make professors more productive (C) is related to productivity improvements rather than a direct factor influencing the supply curve of labor. This could potentially affect demand for professors but does not directly shift the supply curve of labor in the economics professor industry.

Which of the Following Will Not Cause the Supply of Labor