What Do the Terms "Mosaic", "Salad", and "Kaleidoscope" Refer to About

What do the terms "mosaic", "salad", and "kaleidoscope" refer to about American society?

A) that the United States is a cultural "melting pot" which leads to assimilation into a single national character
B) that there are important economic inequalities in the United States that the American dream overlook
C) that differences in America society are important and should be preserved
D) None of these.