The correct answer is C) a sect of Islam that uses political means to enforce narrow and often punitive religious ideals.
Radical Islamic fundamentalism is a political ideology that seeks for the adaptation of public and political life to the religious precepts of Islam and Sharia, the Islamic law, through any mean. There are several Islamist groups and movements, that include political parties like the Muslim Brotherhood of Egypt, that want to establish a social and political order based on Islamic law through legitimate political means. The term "radical" emphasizes the use of violent means and terror in order to achieve this political goal, and it characterizes many terrorist groups -often called jihadist- like Al-Qaeda and ISIS.
