Zennis, a manager, hears rumors of unionization circulating through his workplace. Which of these actions is Zennis authorized to take in an effort to prevent unionization? Responses threaten the employees responsible for the rumors threaten the employees responsible for the rumors promise employees extra vacation time for stopping union talks promise employees extra vacation time for stopping union talks recruit a "mole" within employee ranks to identify malcontents recruit a "mole" within employee ranks to identify malcontents prepare a first round of union avoidance materials