6286. India is still a virgin land exploring its tourism potential.

✅ The correct answer is option D.
Undone : not tied or fastened.

Unexplored : (of a country or area) not investigated or mapped.

Uncouth : lacking good manners, refinement, or grace.

Unexploited : (of resources) not used to maximum benefit.

Virgin : not yet used, exploited, or processed.

Synonym of Virgin is Unexploited