What is logical form?

• A. The form which a sentence must be in, in order to be handled logically
• B. The subject-term
• C. The copula
• D. The predicate-term

Answer: (A)

Logical form is the abstract structure a sentence must have in order to be analyzed and manipulated logically. It focuses on how the parts relate in a way that preserves truth-functional or inferential relationships, often by translating or representing the sentence in a standard form that reveals its logical connections, independent of the specific content.

That idea matches the phrase describing the form a sentence must take to be handled logically: it’s about the overall skeleton, not the particular words chosen. The other terms point to parts of a sentence—the subject-term, the copula, or the predicate-term—which are components of a categorical proposition, not the general logical structure itself.