Based on the provided information, the best answer to the question would be:
A. providing an example of the culture of civility that is being fostered more often in schools.
The dialogue between the two boys showcases a situation where one boy engages in an inappropriate behavior but quickly corrects himself upon being called out. This example supports the idea that there is a growing culture of civility being promoted in schools, where students are becoming more aware of and actively addressing disrespectful behavior.