Correct Answer: Rajasthan

Solution : The correct option is Rajasthan.

The Tapi Basin is a geographical region in India that encompasses parts of Gujarat, Maharashtra, and Madhya Pradesh. It is characterized by the Tapi River and its tributaries, which flow through these states. However, Rajasthan is not part of this basin; it lies to the northwest of the Tapi Basin and is primarily drained by the Luni River. The Tapi Basin is ecologically and agriculturally significant, with its river system supporting a variety of ecosystems and providing water resources for the states within its boundaries.