Lilly Is Only 18 Months of Age

Multiple Choice

Lilly is only 18 months of age. She has started to put two or three words together to communicate with her mother. This morning she said "more nana" to indicate that she wanted to eat more of a banana. Lilly is

A) engaging in infant vocalizations.
B) at the one-word stage.
C) using telegraphic sentences.
D) beyond the critical period.