1. An open market purchase A. shifts the supply curve for reserves to the right and causes the federal funds rate to fall. B. shifts the demand curve for reserves to the right and causes the federal funds rate to rise. C. shifts the supply curve for reserves to the left and causes the federal funds rate to rise. D. shifts the demand curve for reserves to the left and causes the federal funds rate to fall.

The correct answer is option A (shifts the supply curve for reserves to the right and causes the federal funds rate to fall).

Explanation:

Open market purchase Increases the money supply in an economy where government bonds are bought from a bank by the Federal Reserve, this single act makes money available to the bank, which now makes Interest rates fall and raise investment spending. When federal funds rates fall, money supply increases which is a visible characteristic of an open market purchase. Similarly, when the supply curve for reserves shifts to the right, it signifies an open market purchase.

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