Finish the following sentence with the best choice: How do you mail an envelope?

Choices:
- Take your blank envelope, and bring it to a drop box. Open the drop box, and place the envelope inside of it.
- Take your stamped, addressed envelope, and bring it to a drop box. Open the drop box, and place the envelope inside of it.

Answer:
Take your stamped, addressed envelope, and bring it to a drop box. Open the drop box, and place the envelope inside of it.