Lucas is in grade two and his parents have just been called in for a meeting with his teacher. His teacher reports that Lucas is not listening to the classroom rooms and talking back. She reports that he is not physically aggressive but can sometimes say hurtful things to other children. Lucas' parents also report that he has a hard time following rules at home and engages in frequent arguments with them and his little brother. According to the DSM-5 Lucas may be diagnosed with: a. Oppositional Defiant disorder b. ADHD c. Autism Spectrum Disorder d. Conduct Disorder

A. Oppositional Defiant Disorder

Explanation:

All the symptoms are highly identical to usual symptoms with those diagnosed with oppositional defiant disorder. It wouldn't exactly be conduct disorder as Lucas is not physically violent.

dear friend:

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your friend,

the branch of biology that deals with the normal functions of living organisms and their parts.

the way in which a living organism or bodily part functions.