What is the idea of the 'rule of law'?

The correct answer is Option 1 - It implies that all individuals are subjected to the same law.

The idea of the rule of law implies that all individuals — rich and poor, men or women, forward or backward castes — are subjected to the same law. The principal role of the judiciary is to protect rule of law and ensure supremacy of law. It safeguards rights of the individual, settles disputes in accordance with the law and ensures that democracy does not give way to individual or group dictatorship.