Under what condition may a Code Inspector serve notice by leaving it at the violator's residence?

The correct answer indicates that a Code Inspector may serve notice by leaving it at the violator's residence specifically with a resident who is over 15 years old. This is rooted in the legal principle that the recipient of the notice should be of sufficient age and maturity to understand the content of the notice and respond appropriately. In many jurisdictions, serving notice to a minor, especially someone younger than 15, would not guarantee that the notice is acknowledged or acted upon properly.

In contrast, the other options might not fulfill the legal requirement for effective communication of the notice. For instance, leaving the notice with any adult resident could potentially lead to misunderstandings if the resident is not the violator or is unaware of the situation. Similarly, leaving it with a neighbor or simply any resident might not ensure that the intended recipient receives the notice in a timely and recognized manner. The intent of legal notice is to ensure that the violator is fully aware of the infraction, and serving it to someone who is too young or not directly involved may not achieve that goal.