How should the master file containing information on past events be divided?

Dividing the master file containing information on past events by recurring events and one-time events is effective because it allows for easier management and analysis of the data. Recurring events typically have established patterns in terms of planning, execution, and attendance. By categorizing them together, it becomes simpler to reference past occurrences, assess their success, and apply those insights to future events.

On the other hand, one-time events may not follow the same patterns and could require different planning strategies. Keeping these two categories separate allows event planners to tailor their approaches based on the unique characteristics of each type of event. This distinction helps in quickly accessing relevant information, drawing comparisons, and refining future plans based on historical data.

The other choices do not provide the same clarity or utility for information retrieval and analysis. For instance, categorizing by event size and location or participant type and format might not directly address the organizational needs of assessing past events' success and planning future ones. Similarly, using event dates for division is less practical for identifying patterns or making strategic decisions based on past experiences.