POP stands for which expansion?

• A. Postal Office Protocol
• B. Post Office Protocol 3
• C. Post Office Protocol
• D. Personal Office Protocol

Answer: (C)

POP stands for Post Office Protocol. It’s one of the classic email retrieval methods used to fetch messages from a mail server. The numeral 3 is a version indicator (POP3), not part of the expansion itself. The other options use terms that aren’t the official name of this protocol, and adding the number into the expansion would misrepresent what POP stands for.