Which evidence from the text best explains that the deities in "The Birth-Time of the Gods" have limited power? "Without the approval of the ruler of the under-world, she could not return to earth, and this consent she had tried in vain to obtain." "After endless search, he found his Izanami…but so changed was she, that he gazed intently into her eyes before he could recognize her." "Izanagi had little joy in this son, nevertheless, he made him ruler of the ocean." "While the monsters eagerly devoured the luscious grapes and tender shoots, Izanagi gained the broad flight of steps which led back to earth."