When Tanek Serves Jury Duty, He Is Astonished by How

Multiple Choice

When Tanek serves jury duty, he is astonished by how different the casual, talkative people he met in the waiting area behave when they enter the courtroom. They stand and sit straighter, fold their legs more formally, and say "yes, sir" or "yes, ma'am" rather than "yeah" when speaking to the judge or attorneys. The members of the jury pool are responding to

A) the matching effect.
B) a social norm.
C) deindividuation.
D) the fundamental attribution error.