178.What was the main issue faced by Nelson's study group during the session?
(A)Insufficient seating arrangements.
(B)Lack of study materials.
(C)Disturbances caused by neighboring occupants.
(D)Inadequate lighting conditions.
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統計: A(7), B(4), C(247), D(5), E(0) #3171702
統計: A(7), B(4), C(247), D(5), E(0) #3171702