The Social Security Code, 2020, is a comprehensive legislation that consolidates and amends various laws related to social security and employee benefits. It includes provisions from several existing acts, including: The Maternity Benefit Act, 1961 The Payment of Gratuity Act, 1972 The Payment of Bonus Act, 1965 The Employment Exchanges (Compulsory Notification of Vacancies) Act, 1959 Therefore, the correct answer is (D) (1), (2), (3) and (4).