If you finished brewing tea at 10:15 a.m., what is the latest time you can serve the tea?

The correct answer is based on the understanding of how long brewed tea remains fresh for serving. Typically, brewed tea should be served within a specific timeframe to ensure optimal flavor and safety for customers. Generally, brewed tea can be safely served for around 4 hours after brewing.

Since the tea was brewed at 10:15 a.m., adding 4 hours gives you the latest serving time of 2:15 p.m. This ensures that the tea maintains its quality and safety for consumption. Therefore, the latest time to serve the tea while adhering to the quality standards is indeed 2:15 p.m.