Which one is the best answer

2) Matthew, a 24 month old child, comes into the lab. He has approximately 200 words in his vocabularyputting him in the top percentage of children in terms of vocabulary size for children his age. In other words, he has a lot of words in his vocabulary. When asked whether the items below are each a truck, what will Matthew include in his category/label of truck? ...,Based on what we know from Pereira and Smith's work? a) the second and third items b) the third and fourth items c) the second, third, and fourth items d) the second item only