Final answer:
The "Open Shop" and "Mohawk Valley Formula" were anti-union tactics employed by businesses to prevent the spread of union influence and maintain control over labor, opposing the efforts of unions like the AFL and IWW.
Step-by-step explanation:
The "Open Shop" and "Mohawk Valley Formula" were techniques used by employers to minimize the existence of unions and union members at their facilities (choice d). While organizations like the American Federation of Labor (AFL) and the Industrial Workers of the World (IWW) were striving to improve labor conditions and wages through unionizing efforts, employers often resisted these movements. Open shops refer to workplaces where union membership is not required for employment, counteracting the AFL's push for closed shops where only union members would be hired. The Mohawk Valley Formula was a strategy used by companies to combat strikes and union campaigns, involving a combination of propaganda, strike-breaking activities, and legal measures. These tactics were part of broader efforts by businesses to maintain control over labor and prevent the proliferation of union influence.