An industrial union is a union composed of

A) workers in numerous occupations but working in the same industry.
B) workers in manufacturing industries,rather than in the commercial,service,or government sectors.
C) workers sharing a similar industrial job.
D) high-wage workers.

An industrial union is a type of union that represents workers in the same industry but in different occupations. They are not limited to just manufacturing industries and can represent workers in a variety of industries such as transportation, healthcare, and construction. The key characteristic is that the workers are in the same industry, not necessarily the same job or sector. Therefore, choice A is the correct answer. Choices B, C, and D are not accurate descriptions of an industrial union.