Learning is not acquired by birth, but it is the process of acquiring competence by using hereditary resources. School is representative of a society, which is made of a heterogeneous group of people.This entails that, in schools, children are placed in a different kind of environment than the one they belong to. They become members of a new society where the operating rules, norms, and interpersonal styles are different from the local environment.All children who enter school are highly competent language users and have a well-defined vocabulary. They have a natural curiosity to grasp new things.We can say that a child who enters school is already an efficient language user of language for s/he can successfully communicate in her mother tongue or the language of home.The term diversity indicates that a group of people is made up of individuals who are different from each other in some way. In a language class, most of the students come from diverse linguistic and cultural backgrounds.Due to language and cultural diversity, children are unable to demonstrate their language abilities as in this case the diversity becomes a language barrier. For example, if a Hindi speaking student will tell a story in the Hindi language then it will be difficult to understand for an English speaking student.We can say that all children who enter school are highly competent language users but because of language and cultural diversity, they may not always be in a position to demonstrate their abilitiesThus, it is concluded that both (A) and (R) are true (R) is the correct explanation of (A).