What was the religious reason for the crusade

The Crusades were a series of religious wars initiated, supported and sometimes directed by the Latin Church in the medieval period, especially the campaigns between 1096 and 1271 in the Eastern Mediterranean aimed at recovering the Holy Land from Islamic rule.

Religious fervour was difficult to direct and control even though it enabled significant feats of military endeavour. Political and religious conflict in Europe combined with failed harvests reduced Europe's interest in Jerusalem. The distances involved made the mounting of crusades and the maintenance of communications difficult.

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the answer is c, all the other options are things they are known for.

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