Which source of law is not binding but often influential in shaping legal arguments, such as Restatements or law review articles?

• A. Persuasive authorities
• B. Primary binding authorities
• C. Mandatory authorities
• D. Jurisdictional opinions

Answer: (A)

The main idea is that persuasive authorities are non-binding sources that influence how a case is argued and decided. Restatements and law review articles fit this category because they analyze and synthesize the law, offering well-reasoned interpretations and frameworks without commanding a court to follow them. Judges and lawyers cite these sources to support arguments, explain unclear points, or show how other jurisdictions have approached an issue, especially when binding authorities are scarce or ambiguous. They shape argumentation by providing persuasive reasoning, scholarly consensus, and a clear articulation of rules, even though a court is not required to adopt them.

In contrast, primary binding authorities are the actual rules that a court must follow—statutes, constitutions, and controlling decisions from the relevant jurisdiction. Mandatory authorities is another way to refer to those binding sources. Jurisdictional opinions can be persuasive as well, but they’re not the standard category for non-binding influence in the broader sense; they’re specific to a particular court or jurisdiction and don’t carry binding force across the system.