Final answer:
Joi's experience of forgetting what to say and running out of the room due to nervousness in giving a presentation is symptomatic of stage fright, a common but situational feeling of anxiety, and not indicative of a long-term anxiety disorder.
Step-by-step explanation:
What happened to Joi is an example of stage fright, which is a common feeling of nervousness before or during a public performance or speech. Unlike an anxiety disorder, stage fright is typically situational and does not usually persist for months at a time. Anxiety disorders include conditions like obsessive compulsive disorder (OCD), panic disorders, posttraumatic stress disorder (PTSD), and social phobias, which are characterized by prolonged feelings of worry and fearfulness. While stage fright can be a symptom of an anxiety disorder if it occurs persistently in similar situations, an isolated incident such as Joi's, which was triggered by the specific event of giving a presentation, is indicative of stage fright rather than a long-term anxiety disorder.