Which definition best captures the meaning of period when referring to time?

• A. an interval or length of time
• B. a full stop
• C. a particular day
• D. a complete revolution

Answer: (A)

In time terms, period means the length of time something lasts—an interval or span from start to finish. This sense covers phrases like “a period of five years” or “the study period,” where the focus is on how long something continues. It’s not about a moment or mark (that would be a full stop, the punctuation at the end of a sentence) or a specific day (a date). It’s also not about a single orbit in everyday usage, which is a more specialized sense tied to cycles in science. So the best definition here is the interval or length of time.