Actions that can help reduce the deficit: 1. Reducing revenue expenditure (Correct): This involves cutting back on non-essential government spending. Examples include reducing administrative costs, curtailing travel expenses, or postponing discretionary infrastructure projects. 3. Rationalizing subsidies (Correct): This means making subsidies more targeted and efficient. The government can identify and eliminate wasteful subsidies or ensure they reach the intended beneficiaries. Actions that will likely increase the deficit: 2. Introducing new welfare schemes (Incorrect): This would increase government spending and contribute to the deficit. 4. Reducing import duty (Incorrect): Lower import duties can lead to a decrease in government revenue collected from customs duties. This can worsen the deficit. Therefore, the correct answer is 1 and 3 only (Reducing revenue expenditure and Rationalizing subsidies)