The correct answer is "none" because all the countries associated with the regions in the given pairs are incorrect. Mallorca is part of Spain, not Italy; Normandy is located in France, not Spain; and Sardinia is an Italian island, not French. Understanding such geographical affiliations is crucial for UPSC Prelims GS Paper I, as it tests candidates' knowledge of political boundaries and cultural regions, which are fundamental aspects of both contemporary issues and historical contexts in Indian and world geography. Therefore, familiarity with the geographical accuracy of regions and their respective countries is vital for effective and accurate responses in examinations.