Concept:The main religious conflict in Ahab's Israel was between the worship of Yahweh and the worship of Baal.Explanation:Ahab's marriage to Jezebel was a political alliance, but it was Jezebel's active promotion of Baal worship that caused the religious tension.She brought Baal prophets into Israel and suppressed the worship of Yahweh.This direct attack on the Israelite religion created the deep religious crisis during Ahab's reign.Social injustices and the drought were later effects of this tension, not its root cause.Answer:C. Jezebel's introduction of Baal worship