GRE Reading Comprehension: Manhatton-GRE阅读Manhatton - 15EG05JJ4BFAVD8HA$

The passage lends the most support to which of the following conclusions about the nasal spray study of oxytocin? A. The results of the study are inconclusive because a sample set of 40 students is not substantial. B. The nasal spray of oxytocin increased feelings of calm and social bonding for the students. C. Many students were unable to recognize the expressions shown to them when given only the control dose of salt water. D. The students who might need oxytocin most are the ones who appear most responsive to the hormone. E. The subtler the expression, the more difficult it was for the students to identify.