The phrase that describes one purpose of headings in an informative text is "to explain the main idea of a section."
The phrase that describes one purpose of headings in an informative text is "to explain the main idea of a section". Headings are typically used to give readers a clear and concise idea of what each section of a text is about. They provide a preview of the content that follows, allowing readers to quickly determine if the section is relevant to their needs or interests. By stating the main idea of a section in a heading, it helps readers navigate the text more effectively and find the information they are looking for.
