The correct answer is C) the establishment of an Islamic state.
The professed goal that ISIL militants in Syria and Iraq have is the establishment of an Islamic state.
We are talking about the terrorist group called the Islamic State of Iraq and the Levant, also known as ISIS. It is a fundamentalist and extremist group that has caused terror in the Middle East and some other parts of the world. The United States considers this group, one of the most dangerous terrorist groups of the planet.