What conclusion can be drawn from Julie’s interactions with her friends regarding her verbal responses?

The conclusion that Julie will learn to say "Carlos" only when Carlos is present indicates a context-specific understanding of language. This suggests that Julie's verbal responses are influenced by her environment and the stimuli associated with a specific individual. Such learning demonstrates an awareness of social and contextual cues, meaning she may associate the presence of Carlos with the use of his name. This is significant in language development, as it reflects her ability to link verbal communication to specific situations or individuals, which is a key aspect of social interaction and communication skills.

The other options do not accurately represent this nuanced understanding. If Julie were to say "Carlos" to everyone regardless of who is present, it would not indicate a contextual learning, and options suggesting her responses are not influenced by stimuli or that she has learned to ignore stimuli do not agree with the idea of her using language in a meaningful, context-sensitive way. Thus, the correct answer captures the essence of her learned behavior in relation to specific stimuli.