The growth of the service economy in the 1990's caused

Aan increase in American blue-collar jobs, such as coal mining and steel making.
Ba decrease in new small businesses.
Ca new industry-based economy.
Dan increase in white-collar jobs, such as lawyers and teachers.

Verified Answer :

The growth of the service economy in the 1990s caused an increase in white-collar jobs, such as lawyers and teachers, since that is what they were "hunting" for.