Why did Clara break up with Wiliam?

Because she was tired of having the same guy everyday.

May be because Clara didnt receive much attention from william

Clara probably broke up with william because william was a really unsupportive person.

Explanation:

Clara was right when she first told Obi that he didn't really love her and she would regret giving in to his flattery. Soon we discover she has a secret. Her secret is culturally specific – something only another Igbo would care about. She is an osu, part of a social caste forbidden to marry because one of her ancestors was dedicated to a god. They are considered taboo. As Isaac points out, marrying her would be like marrying a leper.

Once Clara admits this to Obi, she tries to break up with him. She says it's not fair to keep the relationship going; she doesn't want to come between Obi and his family. Though Clara was educated in England, and probably wonders about the justice of her taboo status, she never voices those thoughts aloud. Instead, it's clear that she understands how deeply these traditions run. She knows that Obi's parents will never accept her as a daughter-in-law, even though they are Christians and should, theoretically, disagree with a tradition like this. Clara's parents are Christians, too, but that hasn't changed their status as osus or the fact that they are outcasts, even in the church. Though Clara keeps trying to break up with Obi because of this fact, and Obi keeps stubbornly refusing to be broken up with, the relationship's demise is clear, at least to her. She's just sorry, in the end, that she didn't do something about it before she ended up pregnant. That is what makes her bitter.

Explanation:

the answer is b. i'm positive it's that answer.