Concept:The natural method is another name for the Direct method, which teaches a language directly without using the mother tongue, mimicking natural language acquisition.Explanation:The Direct method is known as the natural method because it focuses on speaking and listening skills, just like how children learn their first language. It creates a direct link between words and ideas without translation. This method emphasizes active participation, uses an inductive approach to grammar, and avoids the learner's native language entirely. In contrast, the grammar-translation method relies on translation and grammar rules. The bilingual method uses the mother tongue as a support. Therefore, the natural method is the Direct method.Answer:A. Direct method