In a language class students are memorizing the dialogues through drill and practice and the teacher is correcting their pronunciation, mistakes immediately. They are practising the dialogues in chorus. The teacher is following the

The correct option is Audiolingual method.

Explanation:

The Audio-lingual Method (also known as the Army Method) is an oral-based language teaching approach based on behaviorist psychology and structural linguistics. Key characteristics of this method include:

1. Drill and Practice: Students learn language through repetition and habit formation, memorizing dialogues through continuous drilling.
2. Immediate Error Correction: The teacher acts as a guide and corrects pronunciation and grammatical mistakes immediately to prevent students from forming bad habits.
3. Choral Speaking / Practice: Students often repeat lines or sentences in chorus (as a whole group) before practicing individually to build confidence and rhythm.

Let's look at why the other options do not fit the description:

- Direct Method: Emphasizes teaching the target language directly without using the native language, focusing on spontaneous conversation rather than memorizing dialogues through continuous choral drilling.
- Natural Method: Focuses on acquiring language naturally through immersive communication without explicit grammar drills or immediate stress on error correction.
- CLT (Communicative Language Teaching) Method: Focuses on meaningful communication, interaction, and functional language use rather than mechanical drill-and-practice and immediate error correction.

Therefore, the method being described is the Audiolingual method.