Answer:
c. A father discourages his son from playing with children who are not members of their culture.
Explanation:
Ethnocentrism simply means an abnormal superior estimation of ones culture as superior while others are inferior. In option C, the father is viewing his culture as superior compared to other.
Option A is wrong because teaching a daughter your culture does not necessarily mean she is not allowed to learn some other culture.
Option B is not also the correct answer, the employees may also be given other public holidays, though it is not indicated here.