which is the best evidence for a claim supporting mandatory school uniforms?\na recent study concluded…

which is the best evidence for a claim supporting mandatory school uniforms?\na recent study concluded school uniforms improve graduation and attendance rates.\nschool uniforms violate a students right to freedom of expression.\nschool uniforms might possibly diminish social barriers between students.\nschool uniforms can be a financial burden for some families.
Answer
Answer:
A. A recent study concluded school uniforms improve graduation and attendance rates.
Brief Explanations:
A study - based conclusion provides strong empirical evidence. It directly supports the claim for mandatory school uniforms by showing positive academic - related impacts.