Step 1: About the Narmada Valley Project.
It is a large-scale multipurpose river valley project on the Narmada River involving construction of several dams, the most important being the Sardar Sarovar Dam.
Step 2: States involved.
The project mainly benefits and is spread across Gujarat, Maharashtra, and Madhya Pradesh.
Step 3: Analysis of options.
(A) Gujarat, Rajasthan, Uttar Pradesh: Incorrect.
(B) Maharashtra, Goa, Karnataka: Incorrect.
(C) Gujarat, Maharashtra, Madhya Pradesh: Correct.
(D) Maharashtra, Madhya Pradesh, Chhattisgarh: Incorrect.
Step 4: Conclusion.
The Narmada Valley Project is related to Gujarat, Maharashtra, Madhya Pradesh.