$18$

Fill in the blank that completes the statement.

Alonzo's Crooked Cake Shop has had workers attempting to unionize in order to be able to work fewer hours per week. Alonzo's argues in court that because there is only one other cake shop in the region, a strike and other union activities would disrupt competition in the cake business. Alonzo's is usin$$ to prevent union activities.

Yellow dog contract$($s$)$

Antitrust law$($s$)$

Criminal conspiracv law$($s$)$