Lisa is three years old. her speech is intelligible, but her vocabulary appears to be restricted to only 50 words. she does not combine words to make phrases, yet she manages to establish joint attention with her parents and familiar adults. she uses language and gestures to accomplish functions such as making requests, commenting on people, objects and events and to engage in play. lisa seems to demonstrate delayed language in the areas of: a) phonology and semanticsb) semantics and pragmaticsc) semantics and syntaxd) pragmatics and syntax

Semantic and syntax

Explanation:

The syntax is the study of rules and the principle f the language that determines the structure of the language. The syntax is the basic principle that defines the principle of combination of the linguistic symbols. Students and teachers are to be trained in the Chomsky syntax language.  

Semantic is related to the meaning of word, phrase, and discourse and the denotation and the senses of the language.  

Thus here in the above statement, Lisa's speech appeared to be intelligible but her vocabulary to appear restricted. she does not develop her semantic language. Thus she is not able to combine the sentences and understand the meaning of the sentence.

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(c.) prevent the spread of communism.

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