The right option is; d. the Euphrates River
The Euphrates River is not found in Africa. The Euphrates River is the longest river in southwest Asia. It is about 2,800 km in length. The Euphrates River with the Tigris River form a major river system in Western Asia. The Euphrates River rises where the Karasu River and Murat River meet in northeastern Turkey and flows southeast across Syria and through Iraq.
