What is one of the main teachings of Advaita Vedanta?

One of the main teachings of Advaita Vedanta is the realization of the unity of the self and the divine. This philosophical school of thought posits that the individual self (Atman) is not distinct from the ultimate reality (Brahman), emphasizing a non-dual understanding of existence. In Advaita Vedanta, it is taught that the perception of separateness between the self and the divine is an illusion (Maya), and through knowledge (Jnana) and realization, one can understand that they are fundamentally one and the same. This teaching encourages practitioners to pursue self-inquiry and deep contemplation to awaken to this truth, highlighting the importance of recognizing one's intrinsic connection with the divine.

The other options do not align with the core tenets of Advaita Vedanta. For instance, the belief that the self is separate from the divine contradicts the central teaching of unity. The concept of a personal deity as the supreme god is more characteristic of theistic traditions, whereas Advaita Vedanta emphasizes an impersonal absolute. Additionally, meditation, while not the sole practice in Advaita, is considered a valuable tool for self-realization rather than unnecessary in the pursuit of understanding this unity.