Final answer:
Ethnocentrism and naive realism are obstacles to ethnography because they introduce bias and hinder the objective study of other cultures.
Step-by-step explanation:
Ethnocentrism and naive realism are obstacles to ethnography because they introduce bias and hinder the objective study of other cultures. Ethnocentrism refers to the tendency to view one's own culture as superior and judge other cultures based on one's own cultural standards. This can lead to a lack of understanding and misinterpretation of cultural practices and beliefs. Naive realism, on the other hand, is the belief that one's own perception of reality is the only correct one. It can prevent ethnographers from truly understanding and empathizing with the perspectives and experiences of the people they are studying.