Identify a True Statement About Classic Terrorism

Identify a true statement about classic terrorism.

A) It is carried out by individuals holding very strong core beliefs, regardless of how well defined their objectives are.
B) It tends to occur once and has poorly defined objectives, and therefore members are less committed.
C) It tends to be more chaotic and scattered because the individuals involved are extremely passionate about the cause, despite the lack of unified goals.
D) It entails a specific, well-defined objective pursued by well-trained, professional, underground members.