Final answer:
Zoroaster is the Persian prophet who taught the belief in one god, Ahura Mazda.
Step-by-step explanation:
The Persian prophet who taught the belief in one god, Ahura Mazda, is Zoroaster. Zoroaster, also known as Zarathustra, is the founder of Zoroastrianism, an ancient Iranian religion. He taught that there is one supreme god, Ahura Mazda, who is the creator of all things.
Learn more about Zoroaster's teachings on the belief in one god, Ahura Mazda.