According to kimmel's (1997) theory of levels of social awareness in intercultural exploration, a realization that one's own way of doing things is only one of many and that others are not always abnormal in any way is called

I believe the correct answer is understanding.
Understanding is synonymous with realization, meaning that the two words mean the same. According to Kimmel's theory, when you realize some things about your own culture and others, that belongs to the understanding part of his theory of levels of social awareness in intercultural exploration.