The answer is C) They are different Tribes
In the book, the man and the woman belong to Ibo and Ibibo groups which are two distinct tribes that live in the modern country of Nigeria.
These tribes are found in and around the city of Lagos.
Both groups exhibit slightly different customs and traditions and in the book, a whole story is based around this.
The Ibo are mostly rural tribes who follow old tribal customs and discourage love marriages. Parents in the community usually arrange marriages within the tribe and the children do not have a say.
The Ibibo community however, is more modern and not bound by old traditions.
The book is on the turmoil and confusion that love can create when in between two very distinct African tribes.
Answer:
This would be a simple situation of a brother following his older sibling.
Explanation:
I've seen this before.
Even though Isaiah has been taught by his teachers and/or parents not to use drugs, he will try it if he sees his brother trying it without the consequences he has heard of from his teachers and/or parents.
Unless the older sibling has done anything wrong in the younger sibling's eyes, the younger sibling will always look up to his older brother/sister. Even if the younger brother has been taught over and over again not to do something because of the horrid consequences that come with it, he will do it if he sees his brother doing the same without the consequences specified.
In other words : If the older brother hasn't been caught by anyone for using drugs, the younger brother will follow suit, or at least try to do the same.
Hope this helps.