How many roses are usually included on a full sheet cake?

A full sheet cake typically features a design that balances aesthetics with the cake's size. Generally, when decorating a full sheet cake, it is common to place around 15 roses as part of the decoration. This number allows for a visually appealing layout that can effectively adorn the cake, making it festive for celebrations like birthdays, weddings, or other significant events. The placement of approximately 15 roses provides enough coverage to enhance the overall presentation while also leaving space for writing or other decorative elements, ensuring that the cake looks well-proportioned and inviting.

The other options suggest different counts, which do not align with standard practices for full sheet cake decoration. For instance, fewer roses might leave the cake looking sparse, while a larger number could make the design appear cluttered or overwhelming, detracting from its overall elegance. Thus, the choice of 15 roses stands out as the practical and aesthetically pleasing standard for such cakes.