题目选项分析

The members of the United States Marine Corps (USMC) are famed for their intense devotion to one another. The Marine motto "Semper Fidelis" (Latin, "Always Faithful") is taken to connote, among other things, the lifelong devotion a Marine has to his or her comrades in the corps. Psychologists who study cohesion among groups have concluded that the USMC creates this intense bond through its unique Recruit Training program.

Which of the following, if true, most helps to justify the psychologists' position?

【选项】During their time in the USMC Recruit Training, new recruits have minimal interactions with people outside of the corps.