The day manager MUST be at work at or before _____.

The requirement for the day manager to be at work at or before a specific time is crucial for ensuring that operations start smoothly and efficiently. In this context, the correct answer indicates that the day manager must arrive by 9:00 AM. This time likely aligns with the store's opening hours and the need for the manager to handle preparations and staff management before the full day begins. Being present at this time allows the manager to address any operational issues, oversee staff shifts, and prepare for customer service, which contributes to the overall success of the location.

Arriving by this designated time reflects the responsibilities typically assigned to a day manager, including motivating the team and ensuring the establishment runs according to company standards from the start of the day. Thus, having a clear guideline about when the day manager should arrive is fundamental to maintaining workflow efficiency.