Final answer:
Unions use strikes and boycotts as strategies to force employers to meet labor demands. Strikes involve workers refusing to work, while boycotts involve consumers not buying a company's products.
Step-by-step explanation:
The strategy used by unions to force employers to meet labor demands is a) Strikes and boycotts. Unions engage in collective bargaining and may utilize strikes to achieve better working conditions and compensation. During a strike, workers refuse to work until their demands are met. Unlike boycotts, where consumers avoid purchasing a company's products, strikes directly impact the employer's ability to operate. This leverage is a powerful tool in negotiations. The