Answer:
d. Provided for final resolution of disputes interrupting work that contributed to the war effort.
Explanation:
Labor arbitration refers to a common reference of disputes between the executive management of a business firm (company) and labor unions to an impartial third party known as an arbitrator, for final resolution of the disputes or disagreements.
This ultimately implies that, labor arbitration provided for final resolution of disputes interrupting work that contributed to the war effort.
Basically, it comes as the last step for the resolution of disputes or disagreements with respect to collective-bargaining agreement, after every other measure to reach an agreement (settlement) have been exhausted