Final answer:
The Bureau of Labor Statistics created a coding system known as the BLS Code to classify workers into occupational categories for gathering statistics for federal agencies. correct option is a.
Step-by-step explanation:
The correct answer is a) BLS Code. The Bureau of Labor Statistics created a coding system to classify workers into occupational categories for gathering statistics for federal agencies. This coding system is known as the BLS Code. It helps in organizing and analyzing data related to the workforce in the United States.