Answer:
C. While foreign migrant workers are forced to leave the United States after a period of time, migrant workers from within the United States are able to stay and work indefinitely.
Explanation:
The author was trying to let us know that, due to the type of visa which the migrant workers have, they have no choice than to leave the US after the expiring of the validity while on the otherhand, the migrant workers from within US never had such issue.
Answer:
The concept of freedom will never cease to exist.
Explanation:
"For though the coal may sometimes cease to shine [freedom seems out of reach], the coal can never expire [that freedom is still always there]."