In an experiment, two different types of recorded music were played for neonates in adjacent nurseries in a hospital. In nursery A, classical music was played; in nursery B, rock music was played. After two weeks, it was found that the babies in nursery A cried less, suffered fewer minor ailments, and gained more weight than did the babies in nursery B.
Which of the following additional experimental data would support the hypothesis that classical music is beneficial to the development of newborn?
(A) The neonates in a nursery where no music was played fared better than those in nursery B. - This is out of scope, since we need to see the affect of classical music on babies.
(B) Nursery A contained 15 percent more premature babies than nursery B. - This merely reinforces the fact that classical music is better than rock music. It does not provides any additional info as required by question.
(C) The newborns in nursery A cried less, suffered fewer minor ailments, and gained more weight than did newborns in a nursery with no music. - Now in the argument we are told that classical music is better than rock music. And this option states that classical music is also better than no music - Additional experimental data - Correct.
(D) The music played in nursery A was louder than that played in nursery B. - This is again out of scope since volume is not what we should consider. We need to see the affects of classical music.
(E) The ratio of nurses to newborns in nursery B was 1 to 4; in nursery A, it was 1 to 6. - Out of scope.
Please give kudos if it all makes sense !