The correct answer is B, as the main source of conflict in the Middle East between Israel and the Palestinians involves religion.
The Israeli-Palestinian conflict is the ongoing social and armed conflict between Israelis and Palestinians that dates back to the early 20th century. In response to the growing anti-Semitism against Jews in Europe, a Zionist movement emerged at the end of the 19th century, that defended the establishment of the Jews in Israel. Many Jews emigrated to Israel after the First World War, but at the end of the Second World War and the commotion caused by the Holocaust, the partition of what had been the British mandate in Palestine was approved: a Jewish part and an Arab part. The Arabs did not accept it, and in 1948 they declared war on the newly created state of Israel, but were defeated by the Israelis.
Within Israeli and Palestinian societies, the conflict generates a wide variety of views and opinions. This highlights the deep divisions that exist not only between Israelis and Palestinians, but also within each society. A hallmark of the conflict has been the level of violence that witnessed almost its entire duration. The clashes have been carried out by regular armies, paramilitary groups, terrorist cells and common people. These clashes have not been strictly limited to the military field and have caused a large number of fatalities in the civilian population on both sides.