The correct answer is A) the headings identify important topics in a section.
The other options of the question were B) the headings provided details of pictures in a text. C) define unfamiliar vocabulary words. D) summarize the information in a text.
The statement that best describes the role of the headings in "When Birds Get Flu" is the following: the headings identify important topics in a section.
When writing a text, you always have to consider the correct use of headings and subheadings. Remember that a heading is a short phrase to let the reader the general topic of the section it is about to read. When you use subheadings is because other sub-topics are important and if you include subheadings, your text will look more organized and easy to read.