At 18 Months of Age, Ben Could Speak Approximately 50

Multiple Choice

At 18 months of age, Ben could speak approximately 50 words. However, by 22 months of age, his vocabulary had increased to almost 300 words, most of which were nouns. What term describes Ben's most recent language development?

A) the referential style
B) the naming explosion
C) the expressive explosion
D) the specific nominal explosion