It is the interaction between people, rather than the events that______in their lives that is the main focus of social psychology.
【正确答案】 A
【答案解析】解析：本题考查动词词义辨析。从词义来看，occur(发生)符合原文意思，为正确选项。refer，提及，涉及；infer，推断；imply，暗示。