SAT English Practice Question

The author of this passage explains the relationship between two seemingly unrelated concepts, the development of language and the growth of human civilization. In doing so, the author uses specific examples of language families to illustrate the connection between the development of language and the development of human civilization. In the second paragraph, the author provides a single example of a language family to further support this point. According to the author, what is the connection between the development of language and the development of human civilization?

1. A.The development of language is the result of the development of human civilization.
2. B.The development of human civilization has been made possible by the development of language.
3. C.The development of language and the development of human civilization are independent of each other.
4. D.The development of language and the development of human civilization are inextricably linked.