Answer:
b. Some of the Igbo’s traditions and beliefs are working against them.
Explanation:
Chinua Achebe's "Things Fall Apart," tells the story of Okonkwo and his struggle to come to terms with not only his personal conflict of what a man must be but also at the same time dealing with the changes in his African community. This change is the entry of White Christian missionaries in his village, while he along with the villagers still clung to the traditional practices and beliefs.
In the given excerpt from the text, we see that Okonkwo and the villagers who opposed the presence of the white Christian missionaries felt that since they were encroaching in their space, they would have died. But to their surprise, they were still alive. Added to that, they were even helped by some villagers to build a new house and even got new converts. This shows that they believe some of their own Igbo traditions and beliefs are working against them, which they think is evident from the survival of the white men and the acquiring of help from the Igbo people.
Thus, the correct answer is option b.