Answer:
Correct answers is: B. the Byzantine Empire asked for assistance defending against the Turks.
Step-by-step explanation:
Option A is correct is not correct answer because Crusaders were financing themselves during their conquests.
Option B is correct because Byzantine Empire asked for the assistance in the fight against Seljuks. Still, on the other side, Church used this opportunity to strengthen its role in the Christian world.
Option C is not correct as the Church had no problem with non-Christians, as Christianity was a dominant religion in Europe.
D is also not correct as Christianity profoundly detest the war and violence.