Final answer:
In the Prose Edda, the first man and woman grew from Ymir's armpits. Ymir is a central figure in Norse mythology's creation story.
Step-by-step explanation:
In the Prose Edda, it is said that from Ymir's armpits grew the first man and woman. Ymir is a primeval being in Norse mythology, and his body parts are often told to have given rise to various aspects of the cosmos in the mythological stories. This detail illustrates how the Norse creation myth sought to explain the origins of life and human beings.