What is usually the last step in trying to resolve a grievance filed by a crew member as established by the collective bargaining agreement between the company and the crew member's union?

Correct Answer: Option B — Filing a formal grievance with a company and union agreed-upon arbitrator for binding arbitration.

Collective bargaining agreements typically establish a multi-step grievance procedure. Binding arbitration is the final, impartial step when internal resolutions fail. An independent arbitrator reviews the evidence and renders a decision that both the company and the union must accept, ensuring a fair and final resolution to the dispute.