The correct answer is A. Dragons were all over the country
Step-by-step explanation:
The main idea of a text or a section of a text is the idea that expresses what the whole text or section is about, this means this idea summarizes the ideas and details developed during the text or section expressing the main thought of it. In this case, the section is composed by narrative details that tell the first appearance of dragons the characters of the story experienced when one of these creatures bitted Towser, the subsequent reports about dragons in papers all over the country and the fact that the number of dragons increased massively and people could see dragons of all sizes all around the country, it is also mentioned people do not call them dragons but "winged lizards because they are mainly skeptical, but all the details aim at showing how dragons were suddenly all over the country by providing details that explain how the number of dragons increased. Thus, the main thought or idea is that dragons were all over the country.