Final answer:
The statement that something going terribly wrong after an individual believes they can cope with a threat can often trigger for PTSD is true. PTSD symptoms can include intrusive memories and negative emotional states, and it is related to the severity of the stressor and the individual's perceived coping abilities.
Step-by-step explanation:
When individuals believe they can cope with a threat, but then something goes terribly wrong, this is often a trigger for post-traumatic stress disorder (PTSD) to develop, so the answer is (a) true. PTSD is a chronic stress reaction characterized by a variety of symptoms such as intrusive and painful memories, jumpiness, persistent negative emotional states, detachment from others, angry outbursts, and avoidance of reminders of the event. It occurs after exposure to serious trauma, which could include military combat, physical assaults, disasters, or accidents. The development of PTSD is related to both the severity of the stressor and the individual's perceived ability to cope with the traumatic event. If an event suddenly exceeds a person's coping mechanisms, it may overwhelm their psychological defenses and lead to the onset of PTSD.