The correct answer is "Some parents might think that uniforms will not affect their children's studies"
Step-by-step explanation:
In argumentative texts such as essays, authors might directly or indirectly address the audience to better explain the main point of the text/speech and convince the audience. In the excerpt presented this occurs in "Some parents might think that uniforms will not affect their children's studies" because in this sentence the author directly refers to parents, who are likely the main audience of this text. Moreover, the purpose of the author is to reinforce the idea uniforms are important and prove the ideas some parents have about this issue are not correct.