The fastest way here is to isolate the specific wrongdoing, keeping a client's decree money after execution had ended, and see which case matches that fact pattern.
Matching the wrongdoing to its source case, the correct answer is Prahlad Saran Gupta v. Bar Council of India.
Another angle is to focus on the underlying duty that was breached, an advocate's fiduciary duty to promptly account for and hand over client money, and identify which case enforces exactly that duty on these facts.
Since the fiduciary duty over decree money is the exact duty enforced in the fourth case, the correct answer is Prahlad Saran Gupta v. Bar Council of India.