The correct answer is option 4: Calcutta - Robert Clive.

Pondicherry, associated with Francis Martin, is correctly matched. Francis Martin was a French officer who played a significant role in the establishment of Pondicherry as a French colony.

Ahmedabad, associated with Ahmad Shah I, is also correctly matched. Ahmad Shah I was the founder of the city and the first Sultan of Gujarat.

Madras, associated with Francis Day, is correctly matched. Francis Day was an official of the British East India Company and played a crucial role in the establishment of Madras (now Chennai) as a British settlement.

However, Calcutta being associated with Robert Clive is wrongly matched. Although Robert Clive played an important role in the British occupation and administration of Calcutta, he was not the personality associated with its establishment. The city was already in existence before Clive`s arrival.

Alert - The correct answer should be Calcutta - Job Charnock, who is commonly believed to be the founder of the city.