In Things Fall Apart, the arrival of the missionaries best illustrate the struggle between tradition and change.
While many resist the changes the missionaries bring, many like them. The missionaries bring new goods to the village and export village goods, bringing money into the village. This trade, however, has its drawbacks. Meanwhile, conversation between village elders and Mr. Brown allows them to understand one another. Mr. Brown tries to encourage the elders to educate their children, explaining this will bring hope for their futures.
Although many welcome these changes, others -- including Okonkwo -- are resistant. He and a few others do not like this change and even openly resist it. They value their traditions and do not want them altered.
Therefore, of the many themes in the novel, the one represented by the arrival of the missionaries is "the struggle between tradition and change."
The underlying universal message of a text is the theme.
The theme is a big idea, something that you can learn about life in general.
Here are some examples of themes found in literature:
Love, such as Shakespeare's Romeo and Juliet, a tragic tale of forbidden love with terrible consequences.
Death, The Fault in Our Stars features teenage characters coming to terms with their mortality in the face of terminal illness.
Good vs. evil, The Chronicles of Narnia, C. S. Lewis', follows four siblings who pass into an entirely new world, in which they encounter characters both good (Aslan) and evil (The White Witch)
The correct option is this: SOLDIERS MUST BE WARY OF THEIR ENEMIES.
In the excerpt given above, the author wrote about his men, who forgot their responsibilities as soldiers and got carried away with eating and drinking while the fugitives in their care ran away to muster enemy forces against them. The passage shows that the soldier were not disciplined and they were not wary of their enemies.