in norse mythology,what was the only place on earth thet sutur's sword was unable to destroy?

Question

i have four option a)reidgotaland
b)well of urd
c)gnipahellir
d)hodmimir's forest

Answer 1

Two humans will also escape the destruction of the world by hiding themselves deep within Yggdrasil (some say Hodmimir's Wood) where Surtr's sword cannot destroy. They will be called Lif and Lifthrasir. Emerging from their shelter, they will live on morning dew and will repopulate the human world. They will worship their new pantheon of gods, led by Baldr.

From: http://en.wikipedia.org/wiki/Ragnar%C3%B6k

Answer 2

That would be Hodmimir's forest (actual translation of the word should be wood) which is a reference to the World Tree Yggdrasil, inside of which a human man and woman, Lif and Lifthraisr, were hidden and protected from the fires and will emerge afterwords into a world reborn with new life, and without pain, suffering and hardship.