GMAT Critical Reasoning (CR) | Re: Two prestigious fine art schools are located in New England, Central a

The argument states that the fact that students do better at breath control is mostly because of the voice coaching and practice they received at the institutes. There was nothing special besides the regular learning, about the students at the Central institute as such, i.e. no other factor could have contributed to the success of the students in breath control. D cements this aspect and hence the answer.

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