The correct answer is (c). The Duranti line was a proposed border between India and Pakistan that was never implemented. The other options are all correctly matched.
The Radcliffe line was a border that was drawn in 1947 to partition India and Pakistan. The Maginot line was a line of fortifications that was built by France in the 1930s to protect the country from Germany. The Hindenburg line was a line of fortifications that was built by Germany in the First World War to protect the country from France.
The Duranti line was proposed by the Italian journalist and diplomat Guglielmo Duranti in 1947. The line would have run from the Bay of Bengal to the Arabian Sea, dividing India into two parts. The proposal was rejected by both India and Pakistan.