The branch of logic that studies the form or structure of reasoning is?

• A. Material Logic
• B. Formal Logic
• C. Logical Form Theory
• D. Argument Structure Theory

Answer: (B)

The form or structure of reasoning is studied by formal logic. This field focuses on the patterns of inference—the way conclusions follow from premises—independently of the actual subjects being discussed. Formal logic uses abstract forms and, often, symbolic notation to test whether an argument is valid based on its form alone. For example, a chain such as “All A are B; All B are C; therefore all A are C” demonstrates how the validity depends on the form of the argument, not on the specific terms involved. Material logic, by contrast, deals with the content and truth of statements and the subject matter of arguments, rather than their abstract form. The other terms aren’t the standard way to name this branch, which is why formal logic is the best fit.