The correct answer is indeed option 3, which correctly matches each individual from List I with their corresponding role or title from List II.

I. Harold Pinter, a renowned British playwright, is correctly matched with D (Litterateur), a term for someone devoted to the study of literature.

II. Jacques Diouf, who served as the Director-General of the United Nations` Food and Agriculture Organization (FAO) from 1994 to 2011, is properly associated with A (Director General FAO).

III. Jose Manuel Barroso served as President of the European Commission from 2004 to 2014, therefore he is rightly matched with B (President, European Commission).

Finally, IV. Raymond Lafitte was the Swiss expert appointed by the World Bank for adjudicating the Baglihar Hydel Project dispute between India and Pakistan. Hence, he is correctly paired with C (World Bank appointed expert for adjudicating on the Baglihar Hydel Project).

The other options incorrectly match the individuals with roles or titles they did not hold.