单选题：Questions are based on the following passage.Everyone rememb

Questions are based on the following passage.
Everyone remembers the whitewashing scene in The Adventures of Torn Sawyer. But how many recall the scene that precedes it? Having escaped from Aunt Polly, Tom is teaching himself to whistle when he spies a "newcomer" in his village a newcomer with "a citified air". They quarrel and wrestle in the dirt. Tom wins the battle but returns home late and is thus commanded to whitewash the famous fence.
After this incident, the reader's sympathies are meant to lie with Tom. But imagine how a boy like Tom Sawyer would be regarded today. As far as I. can tell, that fight is not just "inappropriate behavior", to use current playground terminology (术语), but is also one of the many symptoms of "oppositional defiant disorder" (ODD., a condition that Tom manifests throughout the book. And Tom' is not merely ODD: He clearly has attention deficit hyperactivity disorder (ADHD. as well, judging by his inability to concentrate in school.
In fact, Tom manifests many disturbing behaviors. He blames his half-brother for his poor decisions, demonstrating an inability to take responsibility for his actions. He provokes his peers, often using aggression. He deliberately ignores rules and demonstrates defiance toward adults. He is frequently dishonest, at one point even pretending to be dead. Worst of all, he skips school--behavior that might, in time, lead him to be diagnosed with conduct disorder.
I am not being entirely sarcastic here: I have reread "Tom Sawyer" several times in recent years, precisely because Twain draws such fascinating portraits of children whose behavior is familiar, even if we now describe it differently. As a mother of boys, I find this weirdly reassuring: Although, ADHD and ODD are often dismissed asrecently "invented" disorders, they describe personality types and traits that jaave always existed. A certain kind of boy has always had trouble paying attention in school.
But if the behavior or actions of the children and the parents are familiar, the society surrounding them is not. Tom Sawyer turns out fine in the end. In 19th-century Missouri, there were still many opportunities for impulsive kids who were bored and fidgety (烦躁不安的) in school: The very qualities that made him so tiresome---curiosity, hyperactivity, recklessness are precisely the ones that get him the girl, win him the treasure and make him a hero. Nothing like that is available to children who don't fit in today. Instead of striking out into the wilderness, they. get sent to psychologists and prescribed medication--if they are lucky enough to have parents who can afford that sort of thing. Every effort will rightly be made to help them pay attention, listen to the teacher, stop picking fights in the playground. Nowadays, there aren't any other options.
What does Tom Sawyer's behavior make him in current educational terminology? A．A boy of sympathetic disorder.
B．A boy of oppositional defiant disorder.
C．A kid of attention deficiency disorder.
D．A sufferer from concentration disorder.