According to Universal Grammar theory, what is the source of linguistic universals?

According to Universal Grammar theory, the source of linguistic universals is innate to humans. This theory, proposed by Noam Chomsky, suggests that the ability to acquire language is part of our genetic makeup. It argues that all human languages have the same basic structural foundation, which is why children are able to learn any language to which they are exposed, regardless of the complexity of the language. This innate knowledge, according to Chomsky, includes a set of grammatical rules and concepts common to all languages, known as 'linguistic universals'. Therefore, the source of these universals is not the specific languages we learn, but our inherent linguistic competence.