What type of activities are protected under the right to strike?

The correct choice emphasizes that all lawful protests against unfair labor practices are protected under the right to strike. This concept is rooted in labor law, which aims to promote fair working conditions and protect employees' rights to advocate for those conditions. When workers engage in strikes or protests to address grievances related to unfair treatment by employers, such as unsafe working conditions, discrimination, or violations of collective bargaining agreements, they are exercising a critical right designed to ensure that their voices are heard and their rights are upheld.

This protection is significant because it allows employees to organize collectively and take action without fear of retaliation from their employers. The National Labor Relations Act (NLRA) in the United States provides the foundation for such protections, as it recognizes the importance of collective efforts in improving workplace conditions and fostering a fair labor environment.

In contrast, the other options are too restrictive or conditional. For instance, limiting protections to strikes aimed solely at wage increases overlooks the broader scope of employee rights. Similarly, stating that only actions outlined in company policy are protected ignores the legal standards that govern labor rights, while confining the right to strike only to contract negotiations does not encompass the full range of labor disputes that may arise between employees and employers.