The correct answer is option 1: Rule of law. The Supreme Court of India relies on the principles of rule of law in dispensing justice.

The rule of law is a fundamental principle that ensures equality before the law, prevents arbitrary exercise of power, and upholds basic rights and liberties. It implies that every person is subject to the law, regardless of their status or position. This principle is crucial for the functioning of a just and fair legal system.

Option 2, due process of law, is a related concept that guarantees fair treatment in legal proceedings. It ensures that individuals have the right to a fair trial, legal representation, and protection from unjust deprivation of life, liberty, or property. While due process of law is an important aspect of justice, it is not the specific principle that the Supreme Court of India relies on.

Option 3, procedural due process, is similar to due process of law, emphasizing fair procedures in legal proceedings. However, it does not encompass the broader concept of rule of law.

Option 4, procedure established by law, is a legal principle that suggests that as long as a law exists, its implementation is sufficient. However, this principle lacks the safeguard of ensuring that laws are fair and just, which is provided by the rule