Explanation:

All codes are correct.

• The government of India recently introduced the ‘Antarctica Bill’ in the Lok Sabha that envisages regulating visits and activities to Antarctica as well potential disputes that may arise among those present on the continent. The Bill also prescribes penal provisions for certain serious violations.
• India is a signatory to the Antarctica Treaty since 1983 and that encumbered India to specify a set of laws governing portions of the continent where it had its research bases.
• India is also signatory to treaties such as the Convention on the Conservation of Antarctic Marine Living Resources and the Commission for Conservation of Antarctic Marine Living Resources, both of which enjoin India to help preserve the pristine nature of the continent.

Hence option 4th is correct.