A union has represented a workforce for several years and the members have grown dissatisfied with it. Which route lets them act on that?

1. A certification election puts a union in, so the reverse action needs its own procedure. 2. Workers petition for a decertification election, which is run in a similar way to a certification election. 3. The difference is the outcome, because this ballot allows workers to vote the union out. 4. Such elections are also held when a union and employer fail to reach an agreement within a year of certification. 5. A grievance challenges a management action under an existing contract, so it cannot remove the union itself. 6. A boycott is pressure aimed at the employer and would not change who represents the workers, which rules option D out. _Source: OpenStax Introduction to Business (CC BY 4.0), Ch 8 "Managing Human Resources and Labor Relations", section Union Organizing_