Explanation:

Let’s match List-I (Central Trade Union Federation) with List-II (Political Party):

- A. Centre of Indian Trade Unions

? Linked to Communist Party of India (Marxist)

(Correct match: 4)

- B. Indian National Trade Union Congress

? Linked to Indian National Congress

(Correct match: 1)

- C. Bharatiya Mazdoor Sangh

? Linked to Bharatiya Janata Party

(Correct match: 2)

- D. All India Trade Union Congress

? Linked to Communist Party of India

(Correct match: 3)

So the correct order is: 4 1 2 3

- Option 1: 4 1 2 3 (This is correct)

- Option 2: 4 2 1 3

- Option 3: 3 2 1 4

- Option 4: 3 1 2 4