Which of the following describes the term 'service of process'?

The term 'service of process' specifically refers to the formal delivery of legal documents to a party involved in a legal proceeding. This process is crucial because it ensures that the party receives proper notice of any legal action against them and has the opportunity to respond or participate. The delivery can take place in various ways, such as personal service, mail, or through a process server, but the fundamental concept remains the same: it is about delivering documents that initiate or respond to legal actions, like summonses and complaints.

In the context of the other choices, sending legal documentation via mail does not encompass the full scope of 'service of process' since it may lack the formalities required for legal notification. Filing documents with the court is a separate procedural step that doesn't involve informing the party directly. Notifying the court of a change in address is related to court procedures but does not pertain to the act of serving documents.

Thus, the correct description of 'service of process' accurately reflects its primary function and significance in legal proceedings.