The king who disguised himself when he traveled to Ramoth-gilead was
Ahijah
Jehu
Ahab
Jehoshapat
Correct answer is C
So the king of Israel and Jehoshaphat king of Judah went up to Ramoth Gilead.
The king of Israel said to Jehoshaphat, "I will enter the battle in disguise, but you wear your royal robes." So the king of Israel disguised himself and went into battle.
1 Kings 22:29-36