Based on my research I would say Its heart disease and cancer
Answer: Imaginary audience
Explanation:
In terms of psychology, imaginary audience is the imaginary belief concept that a adolescent or any other person persist that he/she is observed by his parents,friends or any stranger.The person tends to think that his/her behavior and actions are constantly attraction the attention of other people towards him/her.
According to the question,when a teenager thinks that everyone around are focusing on them and observing their behavior because they are focus of their own world is depicted through imaginary audience psychology.
