The correct answer is C, as the capture of Majorca by James I of Aragon was significant to the success of the Reconquista because it was well located for shipping and trade.
The conquest for the Christian kingdoms of the island of Majorca was finally achieved by King James I of Aragon between 1229 and 1231. The city of Madina Mayurqa (now Palma de Mallorca) fell in December of the first year, but the Muslim resistance in the mountains lasted three more. After the conquest, King Jaime I divided the territory among the nobles who accompanied him in the campaign.
The geographical situation of the island allowed an intense trade on a large scale, becoming a meeting point for merchants from several coastal areas of the Mediterranean: Perpignan, Maghreb, Genoa, Granada, Catalonia and Valencia, where a conglomerate formed by Jews, Christians and Muslims transported and sold all kinds of merchandise.