The correct answer is D. To free the Holy Land from the Muslims
Step-by-step explanation
The Crusades are the name of a series of military expeditions occurred between the late 11th and 13th centuries in the Holy Land. These expeditions were driven by the Christian Church to liberate this territory from the Muslims and settle there. One of the characteristics of the Crusades was the clothing used by the warriors of the Christian church, which was characterized by wearing a cross badge on their clothing to distinguish themselves from their enemies. The crusades were developed against different groups of other religions, mainly against Muslims, Jews, and Mongols. Therefore, the correct answer is D. To free the Holy Land from the Muslims.