we wear a mask

The speaker says, “We sing, but oh, the clay is vile / Beneath our feet, and long the mile.” (Lines 12-13) What is the most likely interpretation of these lines?

1. AThe people dislike the journey, so they sing a happy song to make themselves feel better.
2. BThe people’s lives are difficult, but they pretend to feel joy when others can see.
3. CThe people are on a gross and muddy road, but they still enjoy traveling together.
4. DThe people have to travel a very long way, and the song helps them pass the time.