The correct answer is c. it contains the key Hindu beliefs.
The Bhagavad-Gita is a crucial text in Hinduism as it addresses fundamental concepts such as duty (dharma), righteousness, and the nature of reality, spirituality, and the self. It is part of the Indian epic Mahabharata and is presented as a conversation between Prince Arjuna and Lord Krishna, who serves as his charioteer. The teachings within the Gita have had a profound impact on Hindu philosophy and practice.