For which purpose might a section drawing be particularly useful?

A section drawing is an essential tool in architectural design as it provides a vertical slice through a building, effectively revealing the internal relationships and spatial organization of different elements. This type of drawing allows architects and designers to clearly communicate how various levels within a structure interact with each other, showcasing features such as ceiling heights, floor levels, and relationships between rooms.

By visualizing these vertical relationships, stakeholders can better understand the flow of space, proportions, and how natural light can penetrate different areas, ultimately aiding in design decisions. In the context of the other choices, while detailed finishes can be shown in other types of drawings, horizontal layouts typically refer to plans rather than sections, and landscaping designs are usually illustrated in site plans or elevations, making section drawings less relevant for those purposes.