Final answer:
The King justifies claiming the land based on religious authority. Natives who do not comply may face punishment and displacement.
Step-by-step explanation:
The King justifies claiming the land based on religious authority in El Requiremento and Bull, therefore option A is correct. The Natives who do not comply with the King's order may face punishment and displacement. The Spanish believed that they had the right to conquer and control native peoples and sought to impose Catholicism upon them.