题目内容：
It’s an activity when the target language is used by the learner for communication purpose (goal) in order to achieve an outcome that can be shared with others. Learners are meaning what they are saying and making free use of language to express what they want to. Specific language forms are not prescribed. This is the definition of ________.
AGrammar Translation Method
BTask-based Learning Approach
CAudio-lingual Method
DTotal Response Method
答案解析：