The principle of Nemo judex in causa sua relates to:

Correct option is B

Nemo judex in causa sua is a fundamental rule of natural justice which means “no one should be a judge in his own cause.” It ensures impartiality in judicial and administrative proceedings by mandating that decision-makers must be free from bias.
Information Booster: This principle, along with audi alteram partem (hear the other side), forms the twin pillars of natural justice, aiming to uphold fairness in decision-making processes.