Step 1: Clarification of the Tropic of Cancer's location. The Tropic of Cancer is an conceptual line that traverses several Indian states, Tripura among them.
Step 2: Examination of provided choices.
Step 3: Final determination. The correct option is (C) Tripura.
| LIST I (Hydro Electric Project) | LIST II (State) |
|---|---|
| A. Machkund | I. Uttar Pradesh |
| B. Obra | II. Odisha |
| C. Mettur | III. West Bengal |
| D. Jaldhaka | IV. Tamil Nadu |