Three of the Following Strategies Should Foster the Development of Students

Three of the following strategies should foster the development of students' social skills. Which strategy, although possibly beneficial in other ways, will not foster more appropriate social skills?

A) Ms. Ackerman has clear rules for her students which communicate that they must handle any conflicts in a non-violent manner.
B) When the school principal visits Mr. Brightman's fifth-grade class seeking volunteers to work at a school fundraiser on Friday afternoon, Mr. Brightman says to his students, "You have always been a very thoughtful and helpful class. How many of you can spare a couple of hours after school on Friday?"
C) During an important district-wide test, Ms. Chambers reminds her students to keep their eyes on their own papers.
D) When students in a cooperative learning group disagree about how best to approach an assigned task, Mr. Dunn helps them brainstorm possible ways of resolving their differences.