Technology advance shifts SRAS and LRAS:

Cutting spending is a contractionary fiscal policy measure aimed at reducing government expenditures. This approach typically decreases overall demand in the economy, which contradicts the goals of expansionary fiscal policy that seeks to increase economic activity and encourage consumer spending.

Tax credits for cars directly reduce the tax liabilities of consumers, increasing their disposable income. By incentivizing purchases of vehicles, this policy encourages consumers to spend more, thereby stimulating demand and promoting economic growth, which aligns perfectly with expansionary fiscal policy objectives.

Raising the reserve ratio is a monetary policy action that restricts the amount of money banks can use for lending. This action is typically contractionary, as it limits the money supply in the economy, making it more difficult for businesses and consumers to borrow and spend, further opposing the goals of expansionary fiscal policy.