The correct answer is: a) Tamil Nadu.
The Godavari-Cauvery link project is a proposed project to link the Godavari and Cauvery rivers. The project aims to transfer surplus water from the Godavari river to the Cauvery river, which is facing water scarcity. The project has been proposed by the Government of India and is being implemented by the National Water Development Agency (NWDA).
The project has been met with opposition from some quarters, who argue that it will have a negative impact on the environment and the people who live in the region. However, the government has defended the project, saying that it is necessary to address the water scarcity in the Cauvery basin.
The project is still in the planning stage and it is not clear when it will be completed. However, if it is completed, it will be one of the largest water transfer projects in the world.
Option b) Karnataka is incorrect because the project aims to transfer water from the Godavari river to the Cauvery river, which is located in Tamil Nadu.
Option c) Telangana is incorrect because the project aims to transfer water from the Godavari river to the Cauvery river, which is located in Tamil Nadu.
Option d) Maharashtra is incorrect because the project aims to transfer water from the Godavari river to the Cauvery river, which is located in Tamil Nadu.