Final answer:
Jayden is most likely being treated for post-traumatic stress disorder (PTSD) with Ativan and psychotherapy, which are common treatments for reducing the symptoms of anxiety after traumatic experiences. The correct option is c. posttraumatic stress disorder.
Step-by-step explanation:
Jayden's psychiatrist prescribed the antianxiety drug Ativan in combination with psychotherapy. This treatment combination is most likely being used to treat post-traumatic stress disorder (PTSD), an anxiety disorder that can develop after a person has experienced or witnessed a traumatic event.
Ativan, a benzodiazepine, helps reduce the symptoms of anxiety, such as panic attacks and extreme fear and worry. PTSD was commonly recognized among military personnel during conflicts like the Vietnam War, and effective management often involves a combination of medication and psychotherapy.