Step 1: Understanding PIL.
Public Interest Litigation (PIL) allows citizens to approach courts for enforcement of rights in public interest.
Step 2: Criticisms.
- Sometimes used for private motives under the guise of public interest.
- Misused for political purposes.
- Leads to excessive increase in litigation burdening courts.
Step 3: Conclusion.
Hence, PIL is criticized on all these grounds. Correct answer is (D).