Answer:
In the Tyson Foods v. Bouaphakeo case, the court applied option A, "The predominance theory in Federal Rule of Civil Procedure 23(b)(3)." This case involved class-action certification and the question of whether statistical evidence could be used to determine damages in a class-action lawsuit. The Court concluded that statistical evidence could be used in this context to establish liability and damages for the class members, even though there were individual variations in the amount of time worked by each employee. This decision was based on the predominance requirement of Rule 23(b)(3) of the Federal Rules of Civil Procedure, which allows class certification when common issues predominate over individual issues.