Explanation:

- The "Giri" approach, advocated by V.V. Giri, highlights non-confrontational methods for resolving industrial disputes.

- Option 1: Adjudication

- Adjudication involves legal processes to settle disputes, which is not aligned with the Giri approach.

- Option 2: Compulsory Collective Bargaining

- The Giri approach prioritizes collective bargaining and internal dispute resolution mechanisms, with active encouragement from the government. The approach discourages compulsory adjudication, viewing it as antithetical to industrial democracy and unity. 

- Option 3: Conciliation

- This is also correct.The Giri approach supports conciliation, aiming for voluntary negotiation and the peaceful resolution of disputes but more appropriate is option 2.

- Option 4: Arbitration

- Arbitration involves a third-party decision, which is different from the dialogue-focused Giri approach.