Select the correct professional counterpart to complete the analogy: “Patient : Doctor :: Litigant : ?” Pick the role that formally represents or advises a litigant in legal proceedings.

Introduction / Context:
This item tests functional role analogies. A “patient” seeks diagnosis/treatment from a “doctor.” A “litigant” is a party to a lawsuit and similarly seeks representation or counsel from a legal professional.

Given Data / Assumptions:

• Patient → Doctor (service-seeker to service-provider in medicine).
• Litigant → needs representation/advice in court or legal matters.
• We need the standard legal professional’s title who represents litigants.

Concept / Approach:
Maintain symmetry of “client/party : specialized professional.” In healthcare the counterpart is doctor; in law the counterpart is lawyer/advocate/attorney. The canonical vocabulary for such test items is “lawyer.”

Step-by-Step Solution:
1) Identify the nature of the relation: client/party → professional expert.2) Map from litigation context: litigant → lawyer.3) Choose the precise, commonly accepted term.

Verification / Alternative check:
In civil or criminal courts, litigants are represented by advocates/lawyers. This is a direct and widely recognized mapping, matching the medical analogy pattern.

Why Other Options Are Wrong:

• Advisor: Generic; not necessarily a licensed legal representative.
• Help: Vague noun; not a profession.
• Legal aid: A service/program, not the professional person.
• Judge: Officer who presides over the court, not the litigant’s representative.

Common Pitfalls:
Confusing the legal system’s roles (judge, legal aid) with the litigant’s representative (lawyer).

Final Answer:
Lawyer