Sammy was a union member.  He had to be. It was the only way to advance in his profession. What was his profession?
Options:
- workplace
- science
- algebra
- province
- construction business Hmmm, let me think.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Construction business is a profession. A union member is required in every construction business.
So, the answer is construction business.