Concept:Functional Grammar is an approach that stresses both the structure (form) and the meaningful use (function) of language in real communication.Explanation:Traditional grammar teaching often focuses only on memorizing rules. In contrast, Functional Grammar helps learners understand how grammatical structures are used to convey specific meanings and achieve real communication goals. For example, learning not just what a passive sentence looks like, but when and why to use it. Thus, the core idea is that grammar instruction should equally emphasize form (how sentences are built) and function (what they do in context).Answer:Option A: Focus on form and function.