Answer:
Correct answer is C. Historians have often studied the Crusades from the European perspective.
Step-by-step explanation:
Option A is not correct as we cannot conclude from this source anything about the literacy rate among Arabs.
B is also not correct as obviously they interacted, which means that they didn't live on the other side of the world.
C is correct because obviously the other side is showing us a different perspective on these wars.
D is not correct as these historians were contemporary, which means that they lived when these events happened.