Final answer:
The foil characters in Things Fall Apart are Okonkwo and Nwoye, with contrasting characteristics that highlight the differences in their values.
Step-by-step explanation:
The foil characters in Things Fall Apart by Chinua Achebe are A) Okonkwo and Nwoye.
In literature, a foil character is a character who contrasts with another character, highlighting their differences. Okonkwo is a strong, ambitious, and traditional man, while Nwoye is sensitive, thoughtful, and drawn to new ideas. Their contrasting characteristics serve to highlight Okonkwo’s traditional values and Nwoye’s departure from those values.