What essential elements must be included in a properly completed planning document?

A properly completed planning document should clearly outline key logistics that ensure an event is well-organized and easily understandable. The inclusion of the event title, date, location, and specific start and ending times is essential because they provide the foundational information necessary for planning and execution.

The event title identifies what the gathering is about, allowing participants to understand its purpose. The date and location detail when and where the event will take place, which is crucial for coordinating guest attendance, vendor services, and other logistical arrangements. Specifying both the start and ending times is equally important, as it helps to structure the event's schedule and manage the participants' expectations regarding its duration.

While other options include relevant elements like budget, theme, and guest lists, they do not address the fundamental logistical details that form the backbone of any event planning document, which is why the combination in this option is the most comprehensive for a planning context.