Concept:Communicative competence means using language correctly and appropriately in different social and cultural contexts.
Explanation:It is not just about grammar, pronunciation, or fluency alone.
The key idea is knowing when, where, and how to speak to whom.
This includes using language effectively for real-life communication.
So, the ability to use language in different situations is the core of communicative competence.
Answer:Option A: use language in different situations.