B. Recognizing the Roman Emperors authority
If anything recognizing the authority of the Roman emperor could be seen as going against Roman Catholicism, as many of the Roman Emperors were pagans during the rise of Christianity. Not to mention, it has no basis in religion, it is a political matter.
The Spanish explorer Francisco Pizarro invaded the Incan Empire in 1532, seeking riches. The Inca had already had some contact with Europeans, and many had died of European diseases.
Hope i helped _O_