Explanation:

Environmental groups in Karnataka have criticised the project to link the Bedti and Varada rivers in Karnataka, calling it unscientific and a waste of public money.

• The Bedti-Varada project was envisaged in 1992 to supply drinking water.
• The plan aims to link the Bedti, a river flowing west into the Arabian Sea, with the Varada, a tributary of the Tungabhadra River, which flows into the Krishna, which in turn flows into the Bay of Bengal.

Hence option 3rd is correct.