What Is the Interactionist's Stance on Language Development

What is the interactionist's stance on language development?

A) Language development is motivated by the need to communicate with others.
B) The information needed to acquire language is contained in the language itself.
C) Language is too complex to come only from experience, so there must be innate structures that enable humans to acquire language.
D) Language comes solely from the gradual strengthening of connections in the neural network.