In Leeming's book The World of Myth an Anthology 3rd edition, overall, creation myths explain:

a) The Creation of the world
b) The creation of humanity/fall of humanity/imperfections of humanity
c) The struggles of immortals in the heavens
d) All of the Above

d) All of the Above.

In Leeming's book The World of Myth an Anthology 3rd edition, overall, creation myths explain all of the above:

a) The Creation of the world: Creation myths often describe how the world and everything in it came into existence. They may include stories of gods or supernatural beings fashioning or forming the world and its elements.

b) The creation of humanity/fall of humanity/imperfections of humanity: Creation myths frequently address the origins of human beings, their purpose, and their relationship with the divine. They may provide explanations for why humans exist, how they were created, and any flaws or imperfections they possess.

c) The struggles of immortals in the heavens: Many creation myths involve the actions and conflicts among gods, goddesses, and other immortals, which take place before or during the creation of the world. These struggles often shape the universe and establish the powers and roles of various deities.

Therefore, creation myths encompass all of these elements, explaining the creation of the world, the creation and fall of humanity, and the struggles of immortals in the heavens.