Final answer:
The question of which city has the highest PROPORTION of white-collar workers can be inferred by examining urban economies, with New York City being a likely candidate due to its large, service-oriented economy.
Step-by-step explanation:
To address the question of what city has the highest PROPORTION of white-collar workers, we need to consider the shift in the American workforce, particularly in the post-industrial era. As the economy moved from industrial-based to service-based, there was a substantial increase in clerical, managerial, and professional occupations. This change was reflected by a rise in employment in fields like sales, insurance, and communications. The relevant data provided does not specify a single city, but by understanding the economic structure of large urban areas, we can deduce that cities with a predominant service economy are likely to have a higher proportion of white-collar workers.
The most populous Combined Statistical Areas (CSAs) in the United States, such as those anchored by New York City and Los Angeles, typically have diversified economies with significant service and professional sectors. Given this, we could infer that a city like New York, which is at the top of the urban hierarchy and has a vast and varied economy, might have a high proportion of workers in white-collar jobs.