Explain the hindu and buddhism religion..

Hinduism is about understanding Brahma, existence, from within the Atman, which roughly means, "self" or "soul"

Buddhism is about finding the Anatman - "not soul" or "not self"

In Hinduism, attaining the highest life is a process of removing the bodily distractions from life, allowing one to eventually to understand the Brahma nature within

In Buddhism, one follows a disciplined life to move through and understand that nothing in oneself is "me," such that one dispels the very illusion of existence.  In so doing, one realizes Nirvana   

Iwould say a, due to the fact these routes display many things that would be useful and provide explanations for how states are known.