Which term refers to the ability to identify grammatically correct sentences?

The ability to identify grammatically correct sentences is best described by the term that emphasizes the adherence to rules of grammar and structure in writing. The focus here is specifically on recognizing what makes a sentence grammatically sound or flawed, which is precisely what "correct sentence usage" entails. This term highlights an understanding of grammatical conventions, including subject-verb agreement, proper use of punctuation, and sentence structure.

In contrast, "fluent writing skills" refers more broadly to an individual's capability to write smoothly and cohesively, which may not necessarily entail a focus on grammatical correctness specifically. "Effective communication" encompasses a wider range of skills, including clarity and the ability to convey information rather than strictly focusing on grammar. Lastly, "rhetorical analysis" involves examining how language is used to persuade or inform rather than identifying grammatical correctness; it deals with the effectiveness of language in context rather than the mechanics of language itself.