Cost-push inflation arises when production costs increase, leading producers to raise prices.
Step 2: Analyze options
Increase in production costs correctly identifies the cause. Increase in aggregate demand causes demand-pull inflation. Decrease in money supply generally reduces inflation. Government subsidies tend to lower costs, not increase them.
Final Answer:
Increase in production costs → Option D
Quick Check:
Cost-push inflation = rising production costs cause price rise ✅