What aspect is associated with chronological ordering?

Chronological ordering refers to the arrangement of events in the order they occurred over time. This concept primarily centers around the passage of time, making length of time the most relevant aspect in this context. When events are organized chronologically, they reflect how long ago an event took place relative to others, following a timeline that shows the progression from the past to the present.

While the other options touch on time in various ways, such as specific points like time of day, sequences driven by common occurrences (order of frequency), or natural cycles (seasonal change), they do not directly align with the concept of arranging events according to their historical sequence. Thus, length of time is what fundamentally links to chronological ordering, making it the correct choice.