How does Paragraph 5 refine the ideas about brain research in Paragraph 3?

It gives more precise examples of how musical training can change the brain.

It uses logical reasoning to support the claim of brain benefits that arise from musical training.

It builds an appreciation for the neuroscientist researchers who led the musical training studies.

It provides specific data about academic performance drawn from the brain research.

The third paragraph summarises the assertion that musical training can help to enhance cerebral function especially in the area of language cognition and auditory function.

In the fifth paragraph, it was proved by the use of an experiment at Northwestern University that it is the production of music that creates the enhanced abilities of the brain in those who engaged in them.

The experiment was carried out on two categories of kids:

Those who were receiving training in music
Those who were training to become proficient in the ability to use a musical instrument

The increased cognition occurred in the brain of those in the latter category.

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