Which of the Following Methods Would Be the Best Way

Multiple Choice

Which of the following methods would be the best way of determining whether an infant understands the syntactical inference of the sentence "Maria pats Grover"?

A) Ask the infant, "Who pats whom?"
B) Reinforce looking at Maria when the above sentence is presented and reinforce looking at Grover when the sentence "Grover pats Maria" is presented.
C) Use a selective looking experiment to determine whether the infant prefers to look at a video screen that shows events matching the verbal statement.
D) Compare the infant's response to 'Maria pats Grover" to her response to "Grover is patted by Maria."