I'll give you a question, please answer with step-by-step reasoning process. If you're moving, the people here will forward your letters for you.
Options:
- envelopes
- post office
- mailbox
- mail box
- front door

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Post office is the public department or corporation responsible for postal services and in some countries telecommunications. If you're moving, the people here at post office will forward your letters for you.
The answer: post office.