Taylor and Madison are 2-year-old identical twins. Taylor's grammar and vocabulary are much more developed than Madison's. Which of the following would most likely explain this difference?
Taylor has a genetic predisposition to accelerated language development.
Taylor frequently sings when reading, while Madison prefers to read silently
to herself.
Taylor is being exposed to more language interaction than is Madison.
Madison probably has a cleft palate.
Taylor is being exposed to more language interaction than is Madison.
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a. varied; measured b. measured; varied c. varied; randomly assigned d. measured; manipulated
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