33. To what outcome does the author directly connect the decline of real-world relationships?
(A) High costs of smartphones and data plans.
(B) Lack of parental and teacher supervision.
(C) Epidemic of loneliness and depression among youth.
(D) Dopamine-related changes in adolescent brain chemistry.
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統計: A(0), B(0), C(1), D(0), E(0) #3985023
統計: A(0), B(0), C(1), D(0), E(0) #3985023