Which of the following best describes an article?

The correct answer accurately captures the general definition of an article as a piece of writing that is included in a publication, such as a newspaper, magazine, journal, or online platform. Articles can cover a wide range of topics and may vary in style, tone, and length. They are typically intended to inform, entertain, or engage readers. This broad definition encompasses various types of articles, including news stories, feature articles, and essays.

While other choices refer to specific types or formats of writing, they do not encompass the general concept of an article as effectively. A formal report submitted to a government body represents a specific type of document, often structured and formal, rather than the more varied and flexible nature of articles. An opinion piece in a political magazine is a specific genre of article but does not represent all articles; it is limited to expressing opinions rather than providing a comprehensive view of what an article can be. A letter written to an editor is also a specific format often used to respond to articles or provide feedback, rather than the broader definition of an article itself. Thus, the selection that defines an article broadly and inclusively is the best choice.