The `Instruments of Accession` were signed by the princely states of India to accede to the Dominion of India or Pakistan after the partition in 1947. The question asks who was the first to sign these instruments. Option 1 states that the Maharaja of Baroda was the first to sign, option 3 states that the Nizam of Hyderabad was the first to sign, and option 4 states that the Raja of Jodhpur was the first to sign. These options are incorrect. Option 2 correctly states that the Dewan of Travancore was the first to sign the `Instruments of Accession`. It is important to note that the `Instruments of Accession` were signed by different princely states at different times, so the order of signing varied. Therefore, option 2 is the correct answer.