Answer:
Option A (Raises wages and employment in that industry)
Explanation:
A union is a group of people from a specific profession that protests/voices their opinions, concerns, and/or matters that they think are necessary for them to stay in that specific profession.
Labor unions give workers the power to negotiate for more favorable working conditions and other benefits through collective bargaining. Union members earn better wages and benefits than workers who aren't union members. On average, union workers' wages are 28 percent higher than their nonunion counterparts.