What Did Roy's Study on Language Development (Using His Child

Multiple Choice

What did Roy's study on language development (using his child as his subject) show about the growth of new-word learning over the first two years of life?

A) The distribution is a smooth bell curve, with the greatest amount of new words learned around 15 months of age"
B) The growth is exponential, with gains in new-word usage each month"
C) There is a ""shark fin"" distribution, showing a rise and then fall of new-word learning"
D) None of the above"