Which of the following factors is NOT a learner factor?

Which of the following factors is NOT a learner factor?
A、Acculturation
B、Personality
C、Interaction
D、Motivation
【正确答案】：C
【题目解析】：第二语言习得受制于诸多因素，既包括有效输入及教育，也包括学习者的个人因素。对语言习得产生影响的个人因素主要包括年龄、个性、动机、对目的语文化的适应、认知方式等，互动并不属于学习者的个人因素，故本题选C。