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Arrange the following statements about the effect of an increase in taxes on total income and output.

(A) An increase in taxes decreases disposable income.

(B) Aggregate demand schedule shifts downwards.

(C) Aggregate expenditure changes by a fraction of tax deduction.

(D) Equilibrium output decreases.

Solution

✅ Correct Option: 2

Option 1 -> Starts with (A) but places (C) after (B), which is incorrect as the fractional change in expenditure occurs before the AD shift.

Option 2 -> Correctly sequences: (A) taxes reduce disposable income first, (C) expenditure changes by fraction (MPC effect), (B) AD shifts downward, (D) equilibrium output falls.

Option 3 -> Incorrectly starts with (B) before disposable income is affected, violating the causal chain.

Option 4 -> Incorrectly starts with (C) before taxes even affect disposable income, which is logically impossible.


Hence, Option 2: (A), (C), (B), (D) -> When taxes increase, the first impact is on disposable income which decreases (A). This doesn't reduce consumption/expenditure by the full tax amount but by a fraction determined by the marginal propensity to consume (C). This fractional reduction in aggregate expenditure causes the aggregate demand curve to shift downward (B). Finally, this downward shift in aggregate demand leads to a decrease in equilibrium output (D). This sequence correctly captures the Keynesian transmission mechanism of fiscal policy. -> correct

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