Item 4
What is the central idea of "The Story of the Beginning" in From Asgard Stories: Tales from Norse Mythology?

a. Midgard is the land between Asgard and Utgard where people live.
b.The great ash tree Yggdrasil connects all worlds together.
c.Disobeying the gods results in punishment.
d.Created beings are responsible for contributing to the world.