Your textbook reviews johnson and newport's study of the english proficiency of korean and chinese immigrants in the united states. the study demonstrated that knowledge of english grammar was associated with

The Critical Period affects language acquisition of a target language.

Explanation:

Jacqueline Johnson and Elissa Newport put out a study entitled : Critical Period Effects in Second Language Learning: The Influence of Maturation State in the Acquisition of English as a Second Language. Here, they point out how the age affects the language acquisition of Chinese and Korean English Language Learners. The younger the language learners are, the more adept they are in acquiring the target language. The study included acquisition of English grammar knowledge.

answer; i believe that the correct answer is (scientific data);

- "in the declaration of independence, it is stated that all people have certain rights that can't be taken away. when the government fails to protect these rights, the people have no choice but to remove that government and replace it with a government that will do its job and protect the people's rights."