Explanation:

The Ken-Betwa River Interlinking Project is a major initiative to transfer surplus water from the Ken River (Madhya Pradesh) to the Betwa River (Uttar Pradesh). This project is specifically designed to provide irrigation and drinking water to the drought-prone Bundelkhand region, which spans parts of both states. Option (2) Chambal is not linked with Ken for this project. Option (3) Sarayu (Ghaghra) is not involved in the Bundelkhand interlinking project. Option (4) Yamuna and Ghaghra are major rivers but not linked for this specific purpose in Bundelkhand.