TheScrum Guidedefines the Daily Scrum as a 15-minute time-boxed event: "The Daily Scrum is a 15-minute event for the Developers of the Scrum Team." This duration is fixed regardless of Sprint length, ensuring consistency and focus on synchronizing work and identifying impediments. Option A refers to a scheduling practice, not the time-box. Option B is arbitrary and not Scrum-defined. Option C is far too long and contradicts theScrum Guide. Option E incorrectly suggests variability based on Sprint length, which isn't supported-15 minutes is the standard. Thus, D is the correct answer.