Concept:CLIL is an acronym for a teaching approach that combines content subject learning with language learning.Explanation:CLIL stands for Content and Language Integrated Learning.It is an approach where students learn both a subject (like science) and a foreign or second language at the same time.The term was coined by David Marsh.This method helps students learn language naturally through meaningful content.It is especially useful in multicultural classrooms and promotes real-life communication.Answer:Option C – Content and Language Integrated Learning.