Speeding, texting, talking on the phone, eating
The answer to this question is:
Radiation
In direct characterization character's personality is explicitly described. Indirect characterization on the other hand uses dialogue, actions and other non-explicitly descriptions. Fro the given sentences the following sentence is example of direct characterization:
The door opened and in came ridiculous Reginald, as dapper and debonair as ever.
I think Dr. Rush is right only because I believe in what he says.
Paragraph four of Anna Quindlen "Quilt of a country" is mainly constructed with questions, and repeats the words "What is the point" at the beginning of each question.
She is trying to prove her point, that despite all of the cultures and ethnicities and different backgrounds that constitute the American people, it is not enough to disintegrate the nation, while other countries were torn apart by these differences.