Concept:Multilingualism as a strategy means using students' home languages as a resource in the classroom to aid learning and inclusion.Explanation:This approach does not mean teaching many languages or focusing only on mother tongues. Instead, it uses the languages that learners already speak. It helps all students feel included, regardless of their linguistic background. By using their own languages, students can better understand concepts. They also learn additional languages more easily. This strategy builds cognitive skills like observation, reasoning, and deduction. It creates a flexible and stimulating learning environment. So, the core idea is to actively use the languages that learners bring to school.Answer:Option C: making use of the languages of learners.