What was an effect of the growth of the service industry in the late 1800s?
the number of people who worked in factories decreased.
the number of people who worked in factories increased.
the urban middle class grew.
the urban middle class shrunk.

An effect of the growth of the service industry in the late 1800s was option 4. The urban middle class grew.

Service industry, an industry in that part of the economy that creates services rather than tangible objects.

Service industries includebanking, communications, wholesale and retail trade, all professional services such as engineering, computer software development, and medicine, nonprofit economic activity, all consumer services, and all government services, including defense and administration of justice. A services-dominated economy typically exists in developed countries. In less-developed countries most people are employed in primary activities such as agriculture and mining.

The correct answer is

C) The urban middle class grew.

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