The appropriate greeting at 2:30 pm would be "Guten Tag!"
To determine the appropriate greeting at 2:30 pm, we need to consider the time of day. In the options given, "Guten Tag!" is the correct answer. "Guten Tag!" means "Good day!" in German and is typically used as a greeting during the afternoon. "Guten Morgen" means "Good morning" and is typically used in the morning, so it is not suitable for 2:30 pm. "Guten Abend!" means "Good evening" and is typically used in the evening, so it is also not appropriate for 2:30 pm. "Gute Nacht!" means "Good night" and is typically used when saying goodbye or before going to sleep, so it is not suitable for a greeting at 2:30 pm.
