Explanation:

- Zoroaster, also known as Zarathustra, was the founder of Zoroastrianism.

- Zoroastrianism is one of the world's oldest continuously practiced religions.

- Option 4: Iranian

- Zoroaster is widely believed to have been a prophet from ancient Iran.

- His teachings significantly influenced Iranian culture and history.

- Correct Answer

- Option 1: Indian

- Zoroaster was not from India and is not linked to Indian prophets.

- Option 2: Chinese

- He was not Chinese and has no historical ties to Chinese prophet traditions.

- Option 3: British

- There is no connection or historical context linking Zoroaster to Britain.