Explanation:

Let’s break down the options:

- Option 1: 1999, Ravindra Varma

- The Second National Commission on Labour (NCL) was actually set up in 1999, but that’s when it was constituted, not when it submitted its report.

- Ravindra Varma was the chairman—but the report didn’t come out in 1999.

- Option 2: 2000, Ravindra Varma

- Ravindra Varma was still the chairman but, again, the report was not submitted in 2000.

- Option 3: 1998, B.P. Wadia

- This is historically off. B.P. Wadia was involved with the First NCL; 1998 is not the right year for the Second.

- Option 4: None of the above

- Here’s the thing: The Second NCL actually submitted its report in 2002, with Ravindra Varma as chairman. So, none of the given options match this exactly.

So, the correct answer is:

- Option 4: None of the above