Beggining from the line "The discussion thus tending to become more theological...", it was clear that the charaters would engage in an argument over the boy's health involving their religious beliefs. The characters appear indeed to argue and stand by their own ideas and solutions.
Since there are no options present to choose from, I would say the best statement that describes this cultural divide is: Because of their pride, people would rather yield someone else's life before giving up their differences and cooperate.
The statement that best describes the cultural divide that this passage illustrates is: "The discussion thus tending to become theological. Madubogwu, a highly practical man, brought it down once more to the ordinary level. 'Have you thought of consulting a native doctor about your son?' he asked Nnaemeka’s father."
In this passage we can see how Madubogwu tries to deviate the conversation from the theological point of view it was reaching, and tries to bring Nnaemeka’s father back to his origins: the native's beliefs. This was very frequent considering that, during colonization, tribes were imposed Catholic religion in order to avoid insurgency, and frequently they would leave aside their beliefs in order to adopt the new religion.
