Concept:
Under Article 139A of the Constitution and Section 406 of the CrPC, the Supreme Court has the power to transfer cases from one High Court or court to another in India.
• Ensures fair trial.
• Avoids bias or inconvenience.
• Maintains judicial consistency.
Step 1: Understand the transfer power.
Case transfer means shifting a case from one court to another when needed for justice.
This power ensures fairness
Step 2: Identify the constitutional authority.
The authority empowered is:
Supreme Court of India
Step 3: Eliminate incorrect options.
• Bar Council -- regulates advocates
• Supreme Court -- correct
• Legal Services Authority -- legal aid only
• Law Commission -- advisory body
Step 4: Final conclusion.
Hence, the correct answer is:
\[
\boxed{\text{The Supreme Court of India}}
\]