The correct answer is option 3, Bhakra Dam. Bhakra Dam is known for being the highest gravity dam in the world. A gravity dam is a type of dam that relies on its own weight to resist the horizontal force of the water it holds back. Bhakra Dam is located on the Sutlej River in Himachal Pradesh, India. It stands at a height of 226 meters (741 feet). The dam was constructed in the mid-20th century and serves multiple purposes, including irrigation, hydroelectric power generation, and flood control. It is considered an engineering marvel due to its immense size and the technology used in its construction.