PLEASE HELP What does the following proverb mean?

Proverbs 26:11: Like a dog that returns to its vomit Is a fool who repeats his folly.

A. Love repays evil with good.
B. We are to appreciate God's discipline.
C. God's retribution for sin is certain.
D. The fool does not learn.

Why it's time to lay the stereotype of the 'teen brain’ to rest 1. part a: which statement identifies the central idea of the text? a experts have spent time researching how different the teenage brain is from adults’ brains, when they are actually more similar than different. b teenagers often engage in risky behavior to fulfill the narrative they have been told about how teenagers are supposed to behave. c explanations for why teenagers engage in risky behavior have been overly focused on brain development, rather than their natural need to explore the world. d teenagers’ risky behavior is influenced by the combined effects of their hormone levels and their brain development.