Nina is ginving a speech to a community parent group about the pros of having a dress code. She provides information about a neighboring school district, citing an increase in student achievement after a dress code was implemented. Which statement should Nina use if she wants to add an appeal to authority in her speech?

A. Students feel safer and more comfortable when everyone is dressed in the same manner.

B. A school superintendent conducted a study that showed a decrease in poor behavior after a dress code was instituted.

C. A greater level of concentration, focus, and seriousness can be found in students who attend schools that require a dress code.
D. School dress codes teach students the importance of maintaining a neat appearance, which can affect students' self-esteem.​