Communicative Language Teaching (CLT), is:

a learning method of language based on oral proficiency rather than mastery of structures.

a linguistic approach that enables speakers to produce grammatically correct sentences.

a process that involves the naturalistic development of language proficiency.

a method of teaching foreign languages that emphasizes interaction to the goal of learning a language.

an approach to the teaching of second and foreign languages that emphasizes interaction to the goal of learning a language.