The correct answer for the location of the Baiji oil refinery is option 2: Iraq.

Located in the Salah ad Din Governorate of Iraq, the Baiji oil refinery is one of the largest oil refineries in the country. It is strategically positioned near the city of Baiji, which is about 200 km north of the capital city, Baghdad. The refinery is situated on the east bank of the Tigris River and covers an extensive area.

The Baiji oil refinery plays a crucial role in meeting the energy demands of Iraq. It has the capacity to refine hundreds of thousands of barrels of oil per day, producing various petroleum products such as gasoline, diesel, and jet fuel. The refinery has faced challenges and disruptions due to conflicts and attacks in the region, but efforts have been made to maintain and restore its operations.

In summary, the Baiji oil refinery is located in Iraq and is an important asset for the country`s oil production and refining industry.