The group carrying out a terrorist attack to further their religious goals would fall under the ideational explanatory category for political violence. Here's why:
1. **Ideational Explanatory Category**: This category focuses on the beliefs, ideologies, and worldviews that drive individuals or groups to commit acts of political violence. In this case, the religious goals of the group serve as the driving force behind their actions.
2. **Example**: When a group believes that their religious beliefs require them to engage in violent acts to achieve their goals or spread their ideology, their actions can be classified under the ideational explanatory category.
By understanding that the motivation behind the terrorist attack is rooted in religious goals and beliefs, we can classify it under the ideational explanatory category of political violence.
