Which of the following have NOT been targeted or plotted against by terrorists or violent individuals?

The correct answer highlights that none of the listed options have been exempt from being targeted or plotted against by terrorists or violent individuals. Public infrastructure, such as bridges, transportation systems, and utilities, has historically been a target due to the significant disruption and panic that attacks on such structures can cause. Places of religious association, including churches, mosques, and synagogues, have been attacked to instigate sectarian violence and create fear among communities. Sporting events have also been venues for attacks, aiming to impact large crowds and media coverage, thus magnifying the effect of fear and chaos.

Understanding that all of these targets have been vulnerable to attacks provides a comprehensive view of the threat landscape. It is important for individuals to recognize that no location is inherently safe from the risk of terrorism, which underscores the need for vigilance and preparedness in various environments.