Explanation:

No person shall be compelled to be a witness against himself under Article 20 (3)

The Indian Constitution provides immunity to an accused against self-incrimination under Article 20(3) – ‘No person accused of an offence shall be compelled to be a witness against himself’. It is based on the legal maxim “nemo teneteur prodre accussare seipsum”, which  means “No man is obliged to be a witness against himself.”

• Note: This prohibition cannot be applied in cases where an object or document is searched or seized from the possession of the accused. For the same reason, the clause does not bar the medical examination of the accused or the obtaining of thumb-impression or specimen signature from him. This immunity is available only against criminal proceedings.
• The compulsory administration of the narco-analysis technique amounts to ‘testimonial compulsion’ and thereby triggers the protection of Article 20(3) of the Constitution.

Hence option 1st is correct.