Technological progress makes economic growth and widespread prosperity possible; it also makes a worker' s particular skills less crucial to production. Yet workers' satisfaction in their work depends on their believing that their work is difficult and requires uncommon skills. Clearly, then, technological progress __. Which one of the following most logically completes the argument? ['is generally opposed by the workers whose work will be directly affected by it', "eliminates many workers' jobs", 'causes workers to feel less satisfaction in their work', 'decreases the quality of most products']