Three of the Following Teachers Are Engaging in Instructional Practices

Three of the following teachers are engaging in instructional practices consistent with principles of effective modeling. Which one is not?

A) Mr. Anderson makes sure students are paying attention when he shows them how to do long division problems.
B) Ms. Benson explains what he is thinking as he solves a mathematical problem on the blackboard in front of the class.
C) Mr. Carlson tells his class he smokes cigarettes,although he wishes he'd never started.
D) Ms. Donovan shows her new second-grade class how to spell her name by writing it in large letters on the chalkboard.