You should probably specify which "Region" you are talking about. But from the options I imagine it is the Middle East. If it is the Middle East then these would fit the Middle East:
Arab: since a good portion of what we consider the Middle East is located in Arabia, where people are Arab and speak Arabic.
Islam: because it is the dominant religion in the Middle East.
Monotheistic: because Islam, which is the dominant religion, believes in one god. The minority religions of the Middle East; Judaism and Christianity are also Monotheistic.
Multi-ethnic: The Middle East has many ethnicities from Bedouin to Persian to Israeli to Kurd to many more.
Hindu and English don't fit because Hinduism isn't very widespread in the Middle East and English doesn't fit because it is not a first language for any countries there.
