In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.
India has already made ........................concessions to enable a consensus and successful outcome at Paris. Now it must ensure that it is not caught in a relentless ............process where each concession becomes an argument for making the next one. The post-Paris negotiations will determine more............the shape of the climate change architecture for the next several decades. We ............ensure that India’s vital interests are safeguarded and the principle ............equity and equitable burden-sharing is reflected across this architecture.