At what time did Harry begin unloading supplies?

To determine the correct time Harry began unloading supplies, it's critical to analyze the context or scenarios provided in the original material or test. The choice of 8:10 a.m. suggests that there is likely either a sequence of events leading up to that time or specific information indicating he began unloading at that moment. This could be supported by a timeline or statement that outlines Harry's activities, such as preparation, arrival time, or other duties that clearly establish 8:10 a.m. as the starting point for unloading.

The other times listed may represent irrelevant details or events that occurred before or after the unloading, which is why they do not apply to when Harry specifically began the unloading process. As a result, understanding the timeline and specific context is crucial for concluding that 8:10 a.m. is the correct answer.