Magellan was NOT murdered for trying to enslave natives. He was killed during a battle.
So B, C, and I'm pretty sure D, are correct.
What detail from the text?
Answer: B. Emperor Leo III was an iconoclast who thought that praying to icons was a violation of the second commandment, while the Pope thought praying to icons was fine.
They all have their own jobs, and none is more important than another.