Mailing by express mail means

• A. Mailing by standard mail.
• B. Mailing by a private courier.
• C. Mailing in conformity with USPS express mail requirements.
• D. Mailing by first class mail.

Answer: (C)

Express mail is a USPS service with guaranteed fast delivery. Mailing by express mail means you prepare and send the item using that service and follow USPS Express Mail rules, including using the Express Mail designation, proper postage, and required labels or receipts. It’s distinct from standard mail or first-class mail and from private couriers. This approach ensures the document is treated as express service, increasing the likelihood it arrives promptly and with traceability.