The correct answer is: B) Andhra Pradesh.
The Almatti Dam is a gravity dam on the Krishna River in the Bagalkot district of Karnataka, India. It is the largest dam in the state and the fourth largest in India. The dam was constructed between 1974 and 1994 to provide irrigation, drinking water, and hydroelectric power.
The construction of the dam was a source of dispute between Karnataka and Andhra Pradesh. Andhra Pradesh was concerned that the dam would reduce the flow of water into its state, which would have a negative impact on its agriculture and economy. The dispute was eventually resolved through a Supreme Court order, which allowed the dam to be constructed but required Karnataka to release a certain amount of water to Andhra Pradesh.
The other options are incorrect because they are not states that share a border with Karnataka on the Krishna River. Tamil Nadu is located to the south of Karnataka, Maharashtra is located to the west, and Kerala is located to the southwest.