Explanation:

- The Tapi River Basin is located mainly in central India and flows westward.

- Option 1, Rajasthan, is not a part of the Tapi Basin. Rajasthan is located further north and is not in the Tapti River's path.

- Option 2, Maharashtra, is indeed part of the Tapi Basin. The river flows through the northern and western parts of the state.

- Option 3, Madhya Pradesh, is also part of the Tapi Basin. The river begins its journey from the state's eastern region.

- Option 4, Gujarat, is part of the basin since the river empties into the Arabian Sea here.

Option:1, Rajasthan

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