A student at any college within the CUNY system is permitted and encouraged to take classes at other CUNY schools when they complement the offerings of his home institution. For example, a student enrolled at Brooklyn College can take a class at Queens College, Hunter College, College of Staten Island, etc. Please note, however, that the final determination of credits earned and requirements satisfied remains with the student's own academic dean at his own school, even if the other school where he takes the class has a different policy. In other words, a student enrolled at Brooklyn College who takes a class at Queens College has to meet the requirements of Brooklyn College, even if Queens College's requirements are different. The rules governing a student's course of study depend solely on the institution in which he is officially enrolled, not on his physical presence in any given classroom.
The above policy statement implies that
A. any student admitted to a CUNY school will be allowed to officially enroll at another CUNY school.
(A) is incorrect because nothing in the stimulus implies a relationship between where one is admitted and where one is enrolled. It is important to understand what these words mean, and the differences between them, in order to successfully answer this question. Application comes first, then admittance (acceptance), then enrollment (commitment to attend and payment of tuition), then classes taken and credits earned, then if requirements are met, graduation. The argument here concerns any student who is already enrolled in, and expects to graduate from, one particular CUNY college. The stimulus tells us that a student enrolled in one school may take classes at another, not that a student admitted to one school (an event which comes before enrollment) may enroll at another. It doesn't tell us anything about how one proceeds from admission to enrollment; that process is outside the scope of the argument.
B. a college may exclude a student enrolled in the CUNY system from its non-academic programs.
(B) is incorrect because it is also not implied by the stimulus. "Non-academic programs" are beyond the scope of the argument, as is whether or not any college may exclude any CUNY student from anything. The fact that CUNY colleges allow students from other CUNY colleges to take academic classes does not imply that they do NOT allow such students to participate in non-academic activities.
C. each college's Admissions Office is the sole judge of who is eligible to attend its classes.
(C) is incorrect because the argument is not concerned with who gets to decide whether or not a student may attend classes at any particular college. In fact, the stimulus makes the blanket statement that students are "permitted and encouraged" to take classes outside of their home school within the CUNY system. The argument here is concerned with whether or not any classes taken at other colleges will count toward the student's degree at his own college.
D. students are not required to follow rules of conduct established by colleges at which they are not enrolled.
(D) is incorrect because it's absurd; there's no reason, in the stimulus or otherwise, to think anyone is not subject to the rules of conduct established by any institution in which he becomes involved, or even on whose property he sets foot. The argument is that students may take classes at other colleges but that their own college gets to decide whether to count those classes toward the student's degree. This does not, by any stretch, mean that the student would not be subject to the other college's rules and regulations. In any event, rules of conduct are not the same thing as academic requirements, and are therefore outside the scope of the argument, so (D) cannot be correct.
E. a student's academic dean at his own school can refuse to accept course credits for classes the student has taken at a different CUNY school.
(E) is correct because it's the only logical choice; it is the most obvious implication of the stated policy. The stimulus clearly and unequivocally states that a student's own academic dean at his own school gets to decide whether or not a class taken at another college will count toward the student's degree requirements. If it's the dean's decision, then the dean can either accept the credits or refuse to accept the credits.