The correct answer is - d. popular culture.
A proponent of multiculturalism would not be fond at all and reject the popular culture. In general, the proponents of the multiculturalism tend to dislike the popular culture, and the main reason for that is that the popular culture tends to assimilate people, making them gradually neglect their heritage, language, culture.
The proponents of multiculturalism are propagating for all cultures and languages to be used, despite the people being in another country where the culture and language are different.
Now from one side that is good for the preservation of the cultures and languages, but from the other side is very bad because it very often leads to violence, misunderstandings, difficulties to adapt.
