Which section of the drawing gives additional information to clarify objects?

The correct choice is the section labeled "Notes and Specs." This part of the drawing plays a critical role by providing detailed explanations and specifications regarding various elements depicted in the drawing. It typically includes clarifications on materials, construction methods, and any particular considerations that need to be taken into account during execution. By offering these additional insights, it helps ensure that the drawings are interpreted correctly and that the construction is carried out in accordance with the intent of the design.

While other sections, like the legend, serve to define symbols used within the drawing, and keynotes often refer to specific features with simple labels, the notes and specifications section encompasses a broader range of information that is essential for understanding the requirements and nuances of the project. The appendix may contain supplementary materials, but it does not directly clarify objects in the main drawing. Thus, the notes and specs are crucial for effective communication of the project's details.