Select all the factors that are ways in which you might become the victim of a terrorist attack

One might become the victim of terrorist attack through the following factors:
Opportunity, location, predictability  and association. 
Terrorists usually plan their attack very carefully.  To initiate their operations, they identify and select a target method, they obtain weapons and recruits people to carry out their terrible acts. There is a need for one to maintain a situational awareness of one's environment at all times.