The Author Argues That Human Beatitude and How It Is

The author argues that human beatitude and how it is achieved is

A) finally an area where all religions agree.
B) a set of ideas unique within each religion that can only be understood by true followers.
C) a set of ideas interwoven with other aspects of each religion, such as ritual practices and morality, religious experience, and so on.
D) the least important part of the world's religions, rightly left to the final chapter.