Final answer:
The three causes of rivalry between Richard I and Philip II were succession disputes, territorial claims, and religious differences. The correct option is A.
Step-by-step explanation:
The three causes of rivalry between Richard I and Philip II were:
- Succession disputes: Richard I and Philip II were both vying for the throne of England and the territories of the Angevin Empire.
- Territorial claims: Both Richard I and Philip II had territorial ambitions and sought to expand their realms, leading to conflicts over land.
- Religious differences: Richard I was a Christian Crusader while Philip II was focused on consolidating his power in France. Their divergent religious goals caused tension and rivalry.
Therefore, the correct option is A.