Automatic stabilizers are: a. provisions by the Federal Reserve that change the money supply. b. provisions by the Federal Reserve that change government spending or taxation. c. provisions in a government's budget that cause government spending to rise (fall) or taxes to fall (rise) automatically—without legislation—when GDP falls (rises). d. provisions in the government's budget that cause government spending to rise (fall) or taxes to fall (rise) and that occur as a result of legislation intended to stabilize the economy.