What is the name of the sacred book of Zoroastrianism?

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What is the name of the sacred book of Zoroastrianism? Answer: Avesta

The sacred book of Zoroastrianism is called the Avesta, a collection of ancient religious texts in the Avestan language, containing hymns, prayers, and laws, with its core being the Gathas, believed to be the words of the prophet Zarathushtra (Zoroaster). The Avesta is comprised of several parts, including the Yasna, Yasht, Vendidad, and Khorda Avesta, with the oldest parts dating back to ancient oral traditions.