Answer:
The author uses advantages and disadvantages to guide reader understanding by providing the reader with a summary of the book's purpose
Step-by-step explanation:
This excerpt from the book gives a brief summary of the elements that are presented in the written material to guide the reader towards their own inferences about homeschooling by taking the positive and negative points of view of it from the teachers' side as well as the students' side and leading to a wider vision of the topic and its final understanding.