Step 1: Read the situation.
A country refuses to extradite a person because they may be tortured if sent back.
Step 2: See what is happening.
Even though extradition is normally allowed, it is blocked here to protect a basic right.
Step 3: Name the idea.
This shows a human rights limitation on extradition, since no one should be sent to face torture.
Step 4: Rule out the others.
It is not about sovereignty, parliamentary supremacy or territorial jurisdiction.
Answer: Human rights limitation (Option 2).