Every child has a built-in storehouse of rules that apply to all human languages is supported by:

Correct option is B

The idea that every child has a built-in storehouse of rules that apply to all human languages is supported by the 'nativist' perspective. Nativists, most notably Noam Chomsky, argue that children are born with an innate ability to learn language. They propose the existence of a Universal Grammar, a set of linguistic principles common to all languages, which children are inherently equipped with. This innate endowment enables children to acquire language rapidly and efficiently.