Which of following river has caused a tension between Turkey, Syria and Iraq?

Euphrates River.

The correct answer is Option 1 - Euphrates River.

Euphrates River has caused a problem between Turkey, Syria and Iraq.

States have used force to protect or seize freshwater resources. Examples of violence include those between Israel, Syria, and Jordan in the 1950s and 1960s over attempts by each side to divert water from the Jordan and Yarmuk Rivers, and more recent threats between Turkey, Syria, and Iraq over the construction of dams on the Euphrates River. A number of studies show that countries that share rivers — and many countries do share rivers — are involved in military conflicts with each other.