Answer:
At this time, there is no law regarding the use of school uniforms, which allows school districts to decide the issue themselves.
Step-by-step explanation:
Persuasive language is a technique in writing wherein the writer seeks to convince the reader or audience to take a particular position. The last sentence is persuasive because the reader provides a reason why the recipient of the information should take a particular position.
The reason he provides to convince him is that "there is no law regarding the use of school uniforms." This was now a basis on which the school districts could make their own decisions about uniforms.