Refer to the ﬁgure above, which shows three supply curves for corn. Which of the following would cause the supply of corn to shift from S1 to S2?

Question

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The development of a more effective insecticide against corn rootworm would decrease the cost of production for corn farmers, leading to an increase in supply and a shift of the supply curve from S1 to S2. An increase in the price of fertilizer (A) would increase the cost of production and decrease supply, shifting the curve to the left. A change in consumer tastes away from cornbread (B) and a decrease in consumer incomes (C) would decrease demand for corn and also decrease supply, shifting the curve to the left.

Refer to the ﬁGure Above, Which Shows Three Supply Curves