When addressing an envelope for delivery in the united states or canada, the zip code should appear
a. directly following the city.
b. on the same line as the city and state.
c. four spaces after the state name.
d. at the bottom right-hand corner.

ZIP codes are codes utilized for the purpose of postal and adhering to the postal system. This contributes to faster process of delivering to and from the send and receiver of the mails. ZIP codes do not just apply on countries worldwide, but this also applies to the places inside these countries. Provinces and cities and have their own ZIP codes assigned to them in accordance to the ZIP code assigned to the country. This is why most mails should have a ZIP code attached to the mail and to the letter when being delivered whether it is locally delivered or internationally delivered. When addressing an envelope for delivery in the United States or Canada, the ZIP code should appear on the same line as the city and state. So the answer to the question above would be B.