Concept:Demand-pull inflation occurs when total demand for goods and services exceeds the available supply, causing prices to rise.
Explanation:A large and increasing budget deficit means government spending is greater than its revenue.
This injects extra money into the economy without a matching increase in the supply of goods.
As a result, consumers and firms have more purchasing power to compete for limited goods and services.
Excess demand then pushes the general price level upward, which is demand-pull inflation.
An increase in the cost of factor inputs leads to cost-push inflation, not demand-pull inflation.
Higher income tax reduces consumers’ disposable income, lowering demand.
A higher bank lending rate discourages borrowing and reduces spending, so it does not cause excess demand.
Therefore, the most likely cause of demand-pull inflation is an increasingly large budget deficit.
Answer:D. increasingly large budget deficit