he said: i.e. Jehoram.
Which way... ? Either by crossing Jordan north of the Dead Sea and attacking Moab from the north; or by Edom, which was under Judah (1 Kings 22:47).
he answered: i.e. Jehoshaphat answered.
Related Commentaries of 2 Kings 3:8
2 Kings 3:8
8 And he said, Which way shall we go up? And he answered, The way through the wilderness of Edom.