Answer:
The story which would most likely include the theme "suffering produces character" is the following one:
B. A man learns to trust a higher power despite losing all his money, possessions, and family.
Step-by-step explanation:
The man suffered in an unimaginable way, since he lost all his money, possessions and family. After going through all of that, he learned to trust a higher power, which means suffering caused him to develop spirituality, and that is usually linked to character, since it makes people more likely to carry out good deeds and be more likely to put into practice the teachings of spiritual leaders (if we can call them that) such as Jesus Christ and Buda.