Answer: Neglected
Step-by-step explanation:
Neglected adolescent is the adolescent child that is left apart from care,love and relationship with family, friends and other peer groups. They tends to be alone and connection-less with other people because of facing ignorance.People show low importance to their presence or treat them as non-existent .
According to the question,Shannon is a neglected adolescent as she is ignored by her classmates as if she does not exist and they do not for connection with her either .