What ultimately determines the values displayed in a hierarchy?

The values displayed in a hierarchy are determined by the references in the higher-level entries. This is because hierarchical structures, such as trees, typically display aggregated or summarized values that depend on the levels above them. Higher-level entries consolidate information from lower-level entries and can use various forms of aggregation (such as summation, averaging, or other calculations) to derive a value that is representative of the lower levels.

Therefore, the data at each level in the hierarchy are inherently linked to the references or relationships defined in higher-level entries. This ensures that whenever the data in the lower levels are updated, the higher levels reflect those changes accordingly, maintaining the integrity and relevance of the data displayed.

In contrast, the other options focus on factors such as reports, database size, or network capacity, which do not directly affect the hierarchical relationships and the mathematical structures defining values in a hierarchy.