Final answer:
The correct answer is D. radio announcement. An expository text explains, informs, or describes a topic using factual information and evidence. A radio announcement is not an example of an expository text as it is usually brief and focused on delivering immediate information.
Step-by-step explanation:
The correct answer is D. radio announcement. An expository text is a type of writing that explains, informs, or describes a topic using factual information and evidence. Examples of expository texts include press releases, book reviews, and news articles, as they present information in a clear and objective manner. However, a radio announcement is usually brief and focused on delivering immediate information, such as news updates or promotional messages, rather than providing in-depth explanations or descriptions. Therefore, it does not qualify as an expository text.