Explanation:

- Article 39A of the Indian Constitution ensures equal justice and free legal aid.

- It aims to provide justice by securing that opportunities for securing justice are not denied due to economic or other disabilities.

- Option 1: 38th Amendment

- This amendment, in 1975, primarily dealt with declaring the powers of the President during emergencies.

- Option 2: 42nd Amendment

- The 42nd Amendment, enacted in 1976, is known as the "Mini Constitution" and introduced Article 39A.

- Answer: This is the correct option.

- Option 3: 44th Amendment

- Enacted in 1978, it primarily dealt with emergency provisions and reducing the power of the government during such times.

- Option 4: None of these

- Not applicable as option 2 is correct.