Final answer:
The adolescent's behavior of trying to make his sister look bad to gain more privileges is identified as Manipulation. It is a deliberate attempt to control perceptions and gain an advantage over his sibling.
The Correct Option is; B. Manipulation.
Step-by-step explanation:
The nurse should identify the dysfunctional behavior of the adolescent son, who is devising ways to make his sister look bad in the eyes of the parents as an attempt to gain more privileges, as Manipulation.
This behavior is characterized by the adolescent's deliberate actions to influence or control his parents' perceptions and gain an advantage over his sibling. It is a form of interpersonal influence that is used to gain benefits at the expense of others, often without consideration for the impact on their feelings or situations.
The dysfunctional behavior exhibited by the adolescent son in this scenario is manipulation. By planning ways to make his sister look bad in order to gain more privileges and be seen as the better sibling, he is using manipulative tactics to achieve his desired outcome.