Answer:
A is the Awnser to your question
<span>The sentence that has an unclear or missing pronoun antecedent is letter C.</span>
Bullying is the most common type of relational and interpersonal brutality teenagers in school and school-based or related activities. Most schools or school related activities have shown only a slight or limited success in reducing students or those in a school based setting’s behavior and attitude.
To carry the straightforward and matter of fact tone through the end of the text.
