Which of the following is a disadvantage of manual drawings?

Manual drawings inherently involve a more time-consuming process for revisions compared to digital methods. Once a manual drawing is completed, modifying it typically requires redrawing sections or making adjustments by hand, which can lead to inaccuracies or a visually inconsistent result. This difficulty in modification can hinder the design process, as changes may require starting over or significantly altering the existing work, making it less flexible for iterative design processes.

In contrast, the other options emphasize benefits commonly associated with digital drawings or have characteristics that do not apply to manual drawings. For example, manual drawings may not use templates as suggested, may not be easily shared, and certainly do not benefit from the storage advantages that digital files do. Thus, the correct answer highlights a significant limitation of manual drawing techniques in terms of adaptability and efficiency in graphic communication.