Simon Showed Grammatical Mastery for the Rules of American Sign

Multiple Choice

Simon showed grammatical mastery for the rules of American Sign Language, even though his teachers (his parents and their friends) did not. This lends support for the idea that

A) there is no sensitive period for learning language.
B) ASL cannot be taught to children after the age of 9.
C) the tendency to acquire language is inborn.
D) a child can learn grammatically incorrect ASL, even if the parents model correct usage.