Final answer:
Map hierarchy is depicted by elements like Cowhead Island's prominence, the legend's explanatory role, and the emphasized label O'D'O which draw attention to certain features, similar to how 16th-century maps like the one of Hispaniola included large-scale ships and sea creatures for navigational and cultural storytelling purposes.
Step-by-step explanation:
Elements of a fictional map that follow common principles of map hierarchy are those that are designed to help the viewer understand the importance and relationship between different map features. For example, Cowhead Island might be represented larger or more prominently than other features to signify its importance, while the legend provides a key to understand the map's symbols and scale, essential for proper interpretation. The label O'D'O could represent a place of particular interest or significance on the map, possibly highlighted or annotated in a way that draws the viewer's attention. Maps from the sixteenth century, such as the one showing Hispaniola, often included decorative elements like large-scale ships and sea creatures to convey a sense of adventure, danger, or the unknown, thus serving not just for navigation but also to illustrate cultural and historical contexts or to attract interest.