Fathers are used to having total authority over choosing their children's spouses. This is the correct option.
This is what the male character,Nnaemeka, tells his fiancee, Nene, when he says that in matters of marraige fathers choose their children's spouses. In fact, he makes a supposition: if her father had lived in a rural area, he would have done the same with her.
These options are not right:
-The idea of arranged marriage has become "something of a joke." ( This is possible in a city but not in rural areas).
-Intermarriage is allowed because the Ibos are "kindly disposed to other people. ( The Ibos are willing to be with other people but in matters of marriage they are rigid. They will not allow an Ibo to marry a person from another etnia).
-Ibo fathers have traditionally married off their children to non-Ibos. ( In fact, it is just the opposite; they want their children to marry Ibos).