Which of the following drawings would be used to chart the location and utility services on a plot of land?

The choice of landscape/site drawings as the correct answer makes sense because these types of drawings are specifically designed to illustrate the layout of external spaces, including the placement of utility services such as water, electricity, and drainage systems on a plot of land. They provide a clear representation of the arrangement of various elements on the site, which is essential for planning and executing utility installations effectively.

Landscape/site drawings typically include topographical details, which help in understanding the natural features of the land and how they interact with built environments. This information is crucial for ensuring that utility services are properly integrated into the overall site design without interfering with landscaping or other features.

Other options like floor plans, cross-sections, and architectural drawings focus more on the internal arrangements of buildings, structural details, or specific architectural design elements rather than the comprehensive layout of a plot of land and its utility services. Therefore, they are not ideal for the purpose of charting the location and utility services within a site.