Mr. Jerry is lecturing on the importance of lab equipment safety. As he gives his lecture, he notices two girls passing a note between them. He stops his lecture abruptly, and calls the whole class's attention to the matter. And even after the girls are shamefully embarrassed, he goes into a diatribe about the value of education, and how most students squander away their high school years. As a result, he spends a half hour scolding and moralizing his students rather than completing his lecture. Mr. Jerry is notorious for this behavior. In this case, Mr. Jerry fails to:
A. show that he is in charge.
B. minimize transition time.
C. hold students accountable.
D. maintain activity flow.
Answer: D
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