Final answer:
Adolescents who join antisocial peer groups are likely to exhibit conduct problems, as this is commonly associated with negative peer influences and deviant behavior.
Step-by-step explanation:
Adolescents who join antisocial peer groups are more likely to exhibit certain behaviors and characteristics that reflect their social influences. Among the options provided, such adolescents are likely to have c) Conduct problems. The decision to align with antisocial peers often correlates with a greater instance of rule-breaking, aggressive behavior, and a general rejection of societal norms. While enhanced social skills, academic success, and increased empathy are typically associated with positive peer influences, conduct problems are the common outcome tied to involvement with antisocial groups. This trend is further emphasized in studies, such as the one by Marshal and Molina, which associate antisocial behaviors with a path leading to substance use, particularly in children and adolescents with ADHD.