Directions: In the questions given below, a blank has been provided for each and needs to be filled with the appropriate word. Choose the best option among the given ones. Contrary to popular perception, India had never been an “outlier state” and though not a member of the nuclear non-proliferation regime, had maintained an ___________ non-proliferation record coupled with a strong commitment to controll

Step-by-step solution

The statement is positive in tone and states India’s clean record in terms of maintaining nuclear non-proliferation. Tarnished means marked/flawed and is opposite to what the statement wishes to convey. Guilty is also incorrect by the same logic. Both can be eliminated. Updated means up to date and does not fit in the context. Gleaming means shiny and is incorrect. Only Impeccable , meaning perfect/flawless suits the context and fits in well. Hence, option C is correct.