Explanation:

- A. Recovery Officer - 4. The Employees' Provident Fund and Miscellaneous Provisions Act, 1952

- The Act provides for the appointment of a Recovery Officer to recover dues.

- B. Compulsory Insurance - 3. The Payment of Gratuity Act, 1972

- The Act mandates gratuity payment through compulsory insurance or other means.

- C. Scheduled Employment - 2. The Minimum Wages Act, 1948

- This Act deals with fixing minimum wages for Scheduled Employments.

- D. Subsistence Allowance - 1. The Industrial Employment (Standing Orders) Act, 1946

- This Act ensures the provision of subsistence allowance during suspension.

- Correct Code: A-4, B-3, C-2, D-1

- Option 4: 4, 3, 2, 1 is the correct answer.