3. What principle does not pertain to labour relations? A) safeguarding employees'opportunities for carrier advancement B) freedom of speech C) safeguarding the right of employees to participate in the organization's management D) freedom of labour

The correct answer is B) freedom of speech.<br /><br />Labor relations primarily focus on the relationship between employers and employees, and the principles that pertain to labor relations include safeguarding employees' opportunities for career advancement, safeguarding the right of employees to participate in the organization's management, and freedom of labor. Freedom of speech, while an important principle, is not specifically related to labor relations.