What does a legend on MEP drawings typically provide?

A legend on MEP (Mechanical, Electrical, and Plumbing) drawings is a crucial component that enhances the clarity and understanding of the technical information presented. It provides detailed explanations of the symbols and abbreviations utilized throughout the drawings. These symbols represent various components, systems, and materials, allowing professionals to interpret the drawings accurately without confusion. By defining these elements, the legend ensures that everyone involved in the project, from engineers to contractors, has a consistent understanding of the drawings. This clarity is essential for effective communication and coordination among the different trades involved in construction.

In contrast, while timelines, measurements, and photos are important aspects of project management and documentation, they are not the primary focus of a legend on MEP drawings. The legend's role is specifically to decode the symbology used in the drawings, making option A the correct choice.