Raising tax thresholds incentivizes labor supply

Steps:

• Identify the policy action: Government raises the income threshold for taxation, lowering taxes on low earners.
• Link to goal: This reduces disincentives to work by increasing net income from employment.
• Classify the policy: Such tax adjustments aim to enhance workforce participation and productivity, defining supply-side policy.
• Match to options: Option A directly names supply-side policy without extraneous categories.

Why A is correct:

• Supply-side policy uses tax incentives to increase labor supply and economic output, as per economic theory on marginal tax rates affecting work effort.

Why the others are wrong:

• B: Adds fiscal policy broadly, but the action is specifically supply-side, not general spending or taxation.
• C: Includes monetary policy, which controls interest rates and money supply, unrelated to taxes.
• D: Mentions monetary policy, irrelevant here, and fiscal without specifying the supply-side aspect.

Final answer: A