Final answer:
John, a clerk in a federal court, is most likely to be a union member due to the higher percentage of unionized workers within federal government occupations. Therefore correct option is B
Step-by-step explanation:
Based on statistics from the Bureau of Labor Statistics and considering the occupations with higher percentages of unionized workers, among the options provided, John, who is a clerk in a federal court, is most likely to be a union member. This is because occupations in the federal government have a relatively high percentage of union members (26.0% belong to a union).
The other options, including independent contractors, supervisors at private firms, and freelance journalists, typically have lower percentages of union membership, as they are often not employed in sectors with high unionization rates.