What is the main product of the following reaction sequence? 
Definitions:
Productive Language
The aspect of language capability that involves producing words, phrases, and sentences to express thoughts and communicate.
Holophrasing
The use of a single word by a child to express a complex idea or sentence, a common stage in language development.
Babbling
A stage in child language acquisition, during which the child spontaneously utters meaningless sounds, often comprising syllables repeated in patterns similar to speech.
Cognitive Disability
A limitation in intellectual functioning and adaptive behavior, affecting learning, communication, and social skills.
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