Early and modern grammarians will disagree on the statement that says

• A. Language changes over time
• B. Every known language first appeared in written form
• C. Grammatical rules are universal
• D. All languages share a common ancestor

Answer: (B)

The main idea here is that language originates and evolves in spoken form long before writing exists. Writing is a later tool used to record speech, not the source of language itself. Evidence shows many languages have no known early written phase, and some never develop a writing system at all. Because of that, the claim that every known language first appeared in written form clashes with what both early grammarians and modern linguists understand about how language begins and develops. So this statement stands out as the one that would generate disagreement across time, making it the best choice. In contrast, the other ideas—languages changing over time, the notion of universal grammatical rules, or all languages sharing a common ancestor—are topics with their own debates but don’t rest on the same foundational issue about the origin of language in writing.