Which passage type is specifically written to describe a complex object or process?

The passage type specifically written to describe a complex object or process is technical writing. This type of writing is designed to convey detailed instructions, specifications, and descriptions in a clear and concise manner, allowing the reader to understand complex subjects, often related to scientific or technical fields.

In technical writing, the focus is on delivering information in a way that is direct and easily digestible, often incorporating diagrams, tables, and other visuals to enhance understanding. This style is essential in contexts such as user manuals, research papers, and instructional materials, where clarity and precision are paramount for guiding the reader through intricate topics.

In contrast, expository writing aims to inform or explain broader topics without the specific focus that technical writing has on complex objects or processes. Narrative writing tells a story and centers on characters and events, while persuasive writing seeks to convince the reader of a particular viewpoint or action, neither of which emphasizes detailed description of complex objects or processes.