Which one of the following methods is suggested for teaching grammar at the primary level?

Which one of the following methods of language teaching cannot be used interchangeably or integrated directly with grammar translation and contextual methods due to its strict exclusion of the native language?

A method of teaching in which a teacher and two to four pupils form a collaborative learning group where dialogues occur on the content of the text passage, creating a zone of proximal development in which reading comprehension improves, is referred to as: