When an industry was monopolized by one company or trust during the gilded age, what happened to workers’ wages?
workers often earned more because fewer businesses were competing for their services.
workers often earned less because more businesses were competing for their services.
workers often earned more because more businesses were competing for their services.
workers often earned less because fewer businesses were competing for their services.

I believe the answer is: Workers often earned less because fewer businesses were competing for their services.

In a monopoly, there is one single business that control a certain market without any competitors to threaten them.

When this happen, workers have no other options regarding their selection of work place and the company that hire them that the workers can't afford to lose their job. This give the company huge power in implementing the type of salary that it want.

in griswold v. connecticut (1965), the supreme court ruled that a state's ban on the use of contraceptives violated the right to marital privacy.