Which description best captures the difference between formal and informal definitions?

• A. Formal Definition uses precise terms; Informal Definition uses familiar words and examples
• B. Formal uses examples; Informal uses strict terms
• C. Both rely on quotes
• D. Both avoid definitions

Answer: (A)

The main idea here is how precise the language is and how universal the meaning should be. A formal definition uses precise terms and exact criteria so everyone can apply it in the same way, leaving little room for ambiguity. An informal definition, on the other hand, relies on familiar words and concrete examples to convey meaning in a way that’s easy to grasp, even though it might not pin down every edge case.

That’s why the best description is that formal definitions use precise terms, while informal definitions lean on familiar language and examples. The other statements mix up what formal and informal definitions rely on—formal definitions aren’t centered on examples, informal definitions aren’t built on strict terms, and not both rely on quotes or avoid defining at all.