问题详情

What is the policy adopted by many schools after heated debating？
A．It is for the universities to clamp down on speech concerning racist comments or other forms of inappropriate ideas.
B．It is to teach students to learn how to express themselves more clearly.
C．It is to give the minority groups/he right to speak freely.
D．It is to urge students to discuss problems concerning race, religion, national origin and ethnicity.请帮忙给出正确答案和分析，谢谢！