Read the passage from the ancient Egyptian Book of the Dead. Homage to thee, O my divine father Osiris! I come to embalm thee. Do thou embalm these my members, for I would not perish and come to an end [but would be] even like unto my divine father. . . . Let not my body become worms, but deliver thou me as thou didst deliver thyself. I pray thee, let me not fall into rottenness.

What is the central idea of this passage?

Osiris rules the underworld.
Preserving the body for burial is important.
Ancient Egyptians worshipped many gods.
The embalming process requires attention to detail.

Preserving the body for burial is important.
Explanation:
The Book of Death consists of spell written by the Egyptians, which served in the afterlife.
The Egyptians people considered the Pharaohs to be a form of god and depicted as divine in the afterlife. Egyptians believe in afterlife made their religion very unique. Pharaohs and Queens preserved their body after death so that the soul could enter their body in an afterlife. During mummification, all the internal organs were removed and replaced with salts, to prevent the body from becoming decay. According to the Egyptians, death was an interruption which can be continued afterlife.

3. i would say one, but one is not prime nor composite.

Isay b but i'm not sure.