Which writing style is intended primarily to inform or explain?

Expository writing is designed specifically to inform, explain, or clarify a particular topic or concept to the reader. It presents facts, data, and insights in a straightforward manner without the writer's personal opinions or emotional appeals. This style includes features such as clear structure, logical sequencing, and objective language, which help readers to understand the material easily.

In contrast, narrative writing focuses on telling a story, often involving character development and plot, while persuasive writing aims to convince the reader to adopt a certain viewpoint or take action, using emotional or logical appeals. Creative writing encompasses a broader range of artistic expression, including fiction, poetry, and other imaginative forms, where the primary goal is often to evoke emotions or entertain rather than strictly inform. Given this context, expository writing stands out as the style specifically crafted for informing or explaining, making it the correct choice.