Which of these does not describe a formal tone

Ican’t find this question here can y’all tell me the awnser?

Time is not always change. time can also mean continuity, and it can mean keeping acknowledged truths in mind despite differences in circumstances. there is no better example of this in things fall apart than the retellings of the proverb about the bird named eneke, the language in both retellings is almost identical despite the length of time that has passed between their repetitions. in comparing the usages of the same proverb, achebe allows his readers to note the similarities and differences between the situations, and he them understand how this story can be applied to their own lives.

What is one reason dante most likely wrote the inferno? a. to fight against the church's view of punishing sin b. to clear his father's name for the wrongs he is accused of c. to show he was a better poet than virgil d. to take revenge on the people in florence who hurt him