Final answer:
Over 60% of total non-farm jobs in the U.S. economy are from service-producing industries, indicating a shift toward a postindustrial service economy. The correct option is a.
Step-by-step explanation:
The percentage of total non-farm jobs in the U.S. economy that comes from service-producing industries is over 60%, making option (a) correct. Figures and statistics signify a clear trend toward a postindustrial service economy, with noticeable growth in the service sector.
The onset of the information age towards the latter part of the 20th century contributed significantly to a workforce shift into information sector jobs. Less than 2% of the U.S. workforce today is in agriculture, with around 15 percent in industry, 18 percent in services, and a significant 65 percent in information activities, indicating that service jobs and information-related activities dominate the employment landscape.