Which mechanism is used when serving a claim on someone with no fixed address?

• A. Without any court involvement.
• B. If the defendant agrees to accept service.
• C. Only for electronic notices.
• D. Substitute or alternative service with court permission.

Answer: (D)

When there’s no fixed address, regular personal service isn’t feasible, so the claim must be served through substitute or alternative methods that the court allows. The court gives permission for these methods to ensure the defendant actually gets notice and the proceedings can move forward with proper jurisdiction. This might include serving at a last known address by leaving documents with a suitable person, or using other permitted means such as publication or, in some rules, electronic notice, but only after an application and court approval. The key point is that without a fixed address, you can’t rely on ordinary service; you need the court's permission to use a substitute method to protect due process. The other options don’t fit this scenario: proceeding without court involvement bypasses due process, voluntary acceptance depends on the defendant agreeing to accept service (not the usual mechanism when address is unknown), and electronic notices alone aren’t universally available or sufficient in place of authorized substitute service.