Answer: Universal grammar
Explanation: The concept or theory of universal grammar credited to Noam Chomsky simply argues that; The human brain is composed or consists of naturally structural set of rules upon which an individual develops his/her language skills, irrespective of the individual's language. It explains that there is a basis upon which any individual develops his language skill and this basis which is a structured set of skills is innate. A close instance is a child's ability to learn it's native language at such a tender age, supporting the existence of a developed genetic structure suitable for language development.