Which type of events typically lead to displaying symptoms of combat stress?

The correct choice highlights that traumatic events are often the catalyst for symptoms of combat stress. These types of events can include exposure to combat, witnessing injury or death, being involved in life-threatening situations, or experiencing significant psychological stress during military operations. Traumatic experiences can overwhelm an individual's ability to cope, resulting in various symptoms, including anxiety, depression, irritability, and difficulty functioning both mentally and emotionally.

In contrast, mundane, normal, and everyday events typically do not evoke the same intense psychological response, as they are generally non-threatening and part of the regular routine of life. These events do not provoke the heightened stress response that accompanies traumatic experiences. Thus, when considering the context of combat stress, it is clear that the nature of traumatic events significantly contributes to the emotional and psychological challenges faced by military personnel.