Answer : 4. "अरुणाचल प्रदेश "
Explanation :

1. A wild clone of a long-extinct plant species, Smilax turbans, a plant that has anti-inflammatory properties and boosts immune system functioning, has been rediscovered during a discovery in the ancient forests of Arunachal Pradesh. Has been discovered.

2. This discovery, which was made almost a century after its first collection, represents a wild counterpart of the famous Ayurvedic medicinal plant Chopchini (Smilax china)