The concept of Autaravad is associated with Vaishnavism, which is option 4. Autaravad is a Sanskrit term that refers to the belief in avataras or incarnations of God in human form. In Vaishnavism, God is believed to have descended to Earth multiple times in different forms (avatars) to restore righteousness and uphold moral order in the world.

Option 1, Hinayana, is not the correct answer because it is a term associated with a branch of Buddhism, which focuses on individual enlightenment and self-liberation.

Option 2, Shaivism, is also not the correct answer. Shaivism is a major tradition within Hinduism that regards Lord Shiva as the supreme being and worship him as such.

Option 3, Tantricism, is also not the correct answer for the question. Tantricism is a religious practice that encompasses various traditions and is not directly associated with the concept of Autaravad.

Therefore, the correct answer is option 4, Vaishnavism, as Autaravad is specifically associated with the belief in avatars within this branch of Hinduism.