Answer:
"I have better fashion sense than anyone else."
Step-by-step explanation:
First statement is very relevant to the topic of school uniform as it states a disadvantage of making uniforms mandatory for students i.e. they violate student's right to express themselves.
The second sentence shows that schools with students in uniforms have fewer behavior problems. So this statement points out a positive aspect of uniform, making it a relevant concept to be included in this topic.
Third statement states that uniforms are not related with student's academic performance. So this statement too is relevant to the topic.
Fourth statement is very subjective and is relevant to one's own fashion sense. It says nothing about impact of introducing uniforms in school. So this statement strays from the topic of a proposed school uniform.