By 7 Years of Age, Children Start Responding to the Stimulus

Multiple Choice

By 7 years of age, children start responding to the stimulus word "dog" with other words like "cat" or "sheep," or responding to the stimulus word "talk" with "run" or "jump." This is evidence that children at this age have begun to

A) memorize a large size of vocabulary without internal organizations.
B) be confused about words with similar meanings.
C) categorize their vocabulary by phonological features.
D) categorize their vocabulary by parts of speech.