Gausa has fallen in love with Niso, a man who is outside her ethnic group. Her family shames her and convinces her to marry Xhoso, a man within her group. Gausa is following her ethnic group's rule of

Answer:Endogamy

Explanation:

Endogamy, is a term which refers to in - marriages which means marrying within your own group and it is a custom. Historically People in some cultures had faced penalty if they married out of their own groups which included even death. If someone is given an authority to marry outside their group this is called exogamy