The famous egyptian book of the dead contains the central ideas behind their
a. religion.
b. burial practices.
c. political system.
d. social hierarchy.

The famous book of the Egyptians contains the central ideas behind their religion. So the first option is the correct option as far as the given question is concerned. This famous book mainly dealt with the magic spells that are actually intended to assist those dead persons through their journey of the underworld or afterlife. These magic spells were written by several priests of the Egyptian Empire. These magic spells were written over a long period of 1000 years and so the contribution of numerous priests cannot be denied.