Which of the following statements is true regarding children's ability to learn words?
A. A toddler may increase his or her vocabulary from 50 words to over 400 words within a couple of weeks.
B. Children tend to start out using overextension and then progress to using underextension more often.
C. Word acquisition tends to happen in sudden spurts for most children.
D. Children's vocabulary spurt occurs around the age of 4 when they are typically in a formal education setting.
Answer: A
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