Answer:
Why would you need to know this? Even if this is part of an assignment, which I highly doubt, we could not answer it, because it is asking for what <em>you</em> pass on the way home.
The progression from wayfarers to spacefarers demonstrate that people have advanced to the point where not only do we travel on foot but Astronauts and Cosmonauts are able to travel in space. This shows how technology has improved.
The answer would be Plot!
The answer here is 3. Diction