While in Egypt on a study abroad program, Sarah, an American student from Atlanta was invited over for dinner by one of her professors. When she got there, the professor introduced her to his family, including his wife, who also happened to be his first cousin. Although she managed to act normal, she was shocked to know that they were related by the blood which for her was almost incest. Sociologically Sarah was exhibiting

cultural relativism

ethnocentrism

xenocentrism

homophobism