Answer:
The correct answer is A, The thesis statement is the first sentence of the introduction, in which the author introduces the topic for the first time.
Step-by-step explanation:
An informational text is a type of non-fictional text based on real events written to provide information to the reader about one specific topic. This as many other texts, includes an introduction, a set of body paragraphs and a conclusion paragraph. Additionally, informational texts usually include a thesis statement that guides all the text by stating the position, opinion or ideas of the author toward the topic and that can be found in the last sentences of the introduction. According to this, you can identify the author's thesis by finding the sentence in the introduction with the author's ideas about the topic.