Answer:
Hello, your answer here is A. the Moors. Before the Reconquista, the Muslims (Moors) had ruled most of the Iberian Peninsula. During the Reconquista, Christian states fought to expel the Moors In 1479, King Ferdinand II of Aragon and Queen Isabella of Castile married, uniting their kingdoms. Thirteen years later, their armies expelled the Muslims from Granada.
Hope this helps! Have a great day. - Mani :)