Use reasoning to lead to the answer of the following question:
Sammy was a union member.  He had to be. It was the only way to advance in his profession. What was his profession?\nOptions:\n- workplace\n- science\n- algebra\n- province\n- construction business
 Reasoning process:
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Construction business is a profession. A union member is required in every construction business. Therefore, the final answer is construction business.
Assistant